20965234463968 has 48 divisors (see below), whose sum is σ = 44120368879776. Its totient is φ = 9782293903360.

The previous prime is 20965234463933. The next prime is 20965234464007. The reversal of 20965234463968 is 86936443256902.

It is a super-2 number, since 2×20965234463968² (a number of 27 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347352421 + ... + 347412772.

It is an arithmetic number, because the mean of its divisors is an integer number (919174351662).

Almost surely, 2^{20965234463968} is an apocalyptic number.

It is an amenable number.

20965234463968 is an abundant number, since it is smaller than the sum of its proper divisors (23155134415808).

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

20965234463968 is a wasteful number, since it uses less digits than its factorization.

20965234463968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694765267 (or 694765259 counting only the distinct ones).

The product of its (nonzero) digits is 403107840, while the sum is 67.

The spelling of 20965234463968 in words is "twenty trillion, nine hundred sixty-five billion, two hundred thirty-four million, four hundred sixty-three thousand, nine hundred sixty-eight".