65165256156 has 576 divisors, whose sum is σ = 219521756160. Its totient is φ = 14598144000.

The previous prime is 65165256119. The next prime is 65165256173.

65165256156 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 253561180 + ... + 253561436.

It is an arithmetic number, because the mean of its divisors is an integer number (381114160).

Almost surely, 2^65165256156 is an apocalyptic number.

65165256156 is a gapful number since it is divisible by the number (66) 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 65165256156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109760878080).

65165256156 is an abundant number, since it is smaller than the sum of its proper divisors (154356500004).

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

65165256156 is a wasteful number, since it uses less digits than its factorization.

65165256156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 413 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 48.

Subtracting from 65165256156 its product of digits (1620000), we obtain a palindrome (65163636156).

The spelling of 65165256156 in words is "sixty-five billion, one hundred sixty-five million, two hundred fifty-six thousand, one hundred fifty-six".