265787613168 has 160 divisors (see below), whose sum is σ = 856481610240. Its totient is φ = 69000391680.

The previous prime is 265787613149. The next prime is 265787613173. The reversal of 265787613168 is 861316787562.

It is a congruent number.

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, 7629646 + ... + 7664402.

It is an arithmetic number, because the mean of its divisors is an integer number (5353010064).

Almost surely, 2^265787613168 is an apocalyptic number.

265787613168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265787613168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428240805120).

265787613168 is an abundant number, since it is smaller than the sum of its proper divisors (590693997072).

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

265787613168 is a wasteful number, since it uses less digits than its factorization.

265787613168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36855 (or 36849 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 60.

The spelling of 265787613168 in words is "two hundred sixty-five billion, seven hundred eighty-seven million, six hundred thirteen thousand, one hundred sixty-eight".