245564540440 has 64 divisors (see below), whose sum is σ = 556454707200. Its totient is φ = 97528670592.

The previous prime is 245564540413. The next prime is 245564540447. The reversal of 245564540440 is 44045465542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245564540447) 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, 3380421 + ... + 3452299.

It is an arithmetic number, because the mean of its divisors is an integer number (8694604800).

Almost surely, 2^245564540440 is an apocalyptic number.

245564540440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245564540440 is an abundant number, since it is smaller than the sum of its proper divisors (310890166760).

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

245564540440 is a wasteful number, since it uses less digits than its factorization.

245564540440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72496 (or 72492 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 43.

The spelling of 245564540440 in words is "two hundred forty-five billion, five hundred sixty-four million, five hundred forty thousand, four hundred forty".