245315602440 has 48 divisors (see below), whose sum is σ = 797275709100. Its totient is φ = 65417493888.

The previous prime is 245315602409. The next prime is 245315602447. The reversal of 245315602440 is 44206513542.

245315602440 is a `hidden beast` number, since 2 + 4 + 5 + 3 + 1 + 5 + 602 + 4 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 232137021636 + 13178580804 = 481806^2 + 114798^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 245315602395 and 245315602404.

It is not an unprimeable number, because it can be changed into a prime (245315602447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340715755 + ... + 340716474.

Almost surely, 2^245315602440 is an apocalyptic number.

245315602440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245315602440 is an abundant number, since it is smaller than the sum of its proper divisors (551960106660).

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

245315602440 is a wasteful number, since it uses less digits than its factorization.

245315602440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681432246 (or 681432239 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The spelling of 245315602440 in words is "two hundred forty-five billion, three hundred fifteen million, six hundred two thousand, four hundred forty".