245142125514440 has 64 divisors (see below), whose sum is σ = 687671417036160. Its totient is φ = 76407935224320.

The previous prime is 245142125514373. The next prime is 245142125514449. The reversal of 245142125514440 is 44415521241542.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 245142125514391 and 245142125514400.

It is not an unprimeable number, because it can be changed into a prime (245142125514449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39795796517 + ... + 39795802676.

It is an arithmetic number, because the mean of its divisors is an integer number (10744865891190).

Almost surely, 2^{245142125514440} is an apocalyptic number.

245142125514440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245142125514440 is an abundant number, since it is smaller than the sum of its proper divisors (442529291521720).

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

245142125514440 is a wasteful number, since it uses less digits than its factorization.

245142125514440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79591599222 (or 79591599218 counting only the distinct ones).

The product of its (nonzero) digits is 1024000, while the sum is 44.

Adding to 245142125514440 its reverse (44415521241542), we get a palindrome (289557646755982).

The spelling of 245142125514440 in words is "two hundred forty-five trillion, one hundred forty-two billion, one hundred twenty-five million, five hundred fourteen thousand, four hundred forty".