65260057520 has 160 divisors (see below), whose sum is σ = 180989665920. Its totient is φ = 21416878080.

The previous prime is 65260057517. The next prime is 65260057559. The reversal of 65260057520 is 2575006256.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1190066 + ... + 1243694.

It is an arithmetic number, because the mean of its divisors is an integer number (1131185412).

Almost surely, 2^65260057520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65260057520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90494832960).

65260057520 is an abundant number, since it is smaller than the sum of its proper divisors (115729608400).

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

65260057520 is a wasteful number, since it uses less digits than its factorization.

65260057520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53743 (or 53737 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 65260057520 in words is "sixty-five billion, two hundred sixty million, fifty-seven thousand, five hundred twenty".