65460156912 has 320 divisors, whose sum is σ = 196176015360. Its totient is φ = 20885630976.

The previous prime is 65460156901. The next prime is 65460157013. The reversal of 65460156912 is 21965106456.

65460156912 is a `hidden beast` number, since 6 + 546 + 0 + 15 + 6 + 91 + 2 = 666.

It is a super-2 number, since 2×65460156912² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 236318118 + ... + 236318394.

It is an arithmetic number, because the mean of its divisors is an integer number (613050048).

Almost surely, 2^65460156912 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 65460156912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98088007680).

65460156912 is an abundant number, since it is smaller than the sum of its proper divisors (130715858448).

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

65460156912 is a wasteful number, since it uses less digits than its factorization.

65460156912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 65460156912 in words is "sixty-five billion, four hundred sixty million, one hundred fifty-six thousand, nine hundred twelve".