65697268420920 has 64 divisors (see below), whose sum is σ = 197093808184320. Its totient is φ = 17519093541504.

The previous prime is 65697268420909. The next prime is 65697268421011. The reversal of 65697268420920 is 2902486279656.

It is a super-2 number, since 2×65697268420920² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9293109 + ... + 14756571.

It is an arithmetic number, because the mean of its divisors is an integer number (3079590752880).

Almost surely, 2^{65697268420920} is an apocalyptic number.

65697268420920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65697268420920 is an abundant number, since it is smaller than the sum of its proper divisors (131396539763400).

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

65697268420920 is a wasteful number, since it uses less digits than its factorization.

65697268420920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5563684 (or 5563680 counting only the distinct ones).

The product of its (nonzero) digits is 156764160, while the sum is 66.

The spelling of 65697268420920 in words is "sixty-five trillion, six hundred ninety-seven billion, two hundred sixty-eight million, four hundred twenty thousand, nine hundred twenty".