245518996076442 has 144 divisors (see below), whose sum is σ = 604947083799240. Its totient is φ = 71825809440000.

The previous prime is 245518996076437. The next prime is 245518996076449. The reversal of 245518996076442 is 244670699815542.

Added to its reverse (244670699815542) it gives a square (490189695891984 = 22140228²).

245518996076442 is a `hidden beast` number, since 2 + 4 + 5 + 5 + 1 + 8 + 9 + 9 + 607 + 6 + 4 + 4 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 210938704065441 + 34580292011001 = 14523729^2 + 5880501^2 .

245518996076442 is a rare number.

It is not an unprimeable number, because it can be changed into a prime (245518996076449) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 551876692 + ... + 552321392.

Almost surely, 2^{245518996076442} is an apocalyptic number.

245518996076442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 245518996076442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302473541899620).

245518996076442 is an abundant number, since it is smaller than the sum of its proper divisors (359428087722798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245518996076442 is a wasteful number, since it uses less digits than its factorization.

245518996076442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453501 (or 453487 counting only the distinct ones).

The product of its (nonzero) digits is 1045094400, while the sum is 72.

Adding to 245518996076442 its reverse (244670699815542), we get a square (490189695891984 = 22140228²).

Subtracting from 245518996076442 its reverse (244670699815542), we obtain a square (848296260900 = 921030²).

The spelling of 245518996076442 in words is "two hundred forty-five trillion, five hundred eighteen billion, nine hundred ninety-six million, seventy-six thousand, four hundred forty-two".