245415415253440 has 112 divisors (see below), whose sum is σ = 585504555562080. Its totient is φ = 97980024729600.

The previous prime is 245415415253431. The next prime is 245415415253441. The reversal of 245415415253440 is 44352514514542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245415415253441) 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, 384602494 + ... + 385240066.

It is an arithmetic number, because the mean of its divisors is an integer number (5227719246090).

Almost surely, 2^{245415415253440} is an apocalyptic number.

245415415253440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245415415253440 is an abundant number, since it is smaller than the sum of its proper divisors (340089140308640).

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

245415415253440 is a wasteful number, since it uses less digits than its factorization.

245415415253440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639870 (or 639860 counting only the distinct ones).

The product of its (nonzero) digits is 7680000, while the sum is 49.

Adding to 245415415253440 its reverse (44352514514542), we get a palindrome (289767929767982).

The spelling of 245415415253440 in words is "two hundred forty-five trillion, four hundred fifteen billion, four hundred fifteen million, two hundred fifty-three thousand, four hundred forty".