65956398560 has 192 divisors, whose sum is σ = 175673401344. Its totient is φ = 23233996800.

The previous prime is 65956398509. The next prime is 65956398583. The reversal of 65956398560 is 6589365956.

It is a super-2 number, since 2×65956398560² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a junction number, because it is equal to n+sod(n) for n = 65956398493 and 65956398502.

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, 4570877 + ... + 4585283.

It is an arithmetic number, because the mean of its divisors is an integer number (914965632).

Almost surely, 2^65956398560 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 65956398560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87836700672).

65956398560 is an abundant number, since it is smaller than the sum of its proper divisors (109717002784).

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

65956398560 is a wasteful number, since it uses less digits than its factorization.

65956398560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14537 (or 14529 counting only the distinct ones).

The product of its (nonzero) digits is 52488000, while the sum is 62.

The spelling of 65956398560 in words is "sixty-five billion, nine hundred fifty-six million, three hundred ninety-eight thousand, five hundred sixty".