21925931103760 has 20 divisors (see below), whose sum is σ = 50977789816428. Its totient is φ = 8770372441472.

The previous prime is 21925931103679. The next prime is 21925931103763. The reversal of 21925931103760 is 6730113952912.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14219777311744 + 7706153792016 = 3770912^2 + 2775996^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×21925931103760² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21925931103763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137037069319 + ... + 137037069478.

Almost surely, 2^{21925931103760} is an apocalyptic number.

21925931103760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21925931103760 is an abundant number, since it is smaller than the sum of its proper divisors (29051858712668).

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

21925931103760 is a wasteful number, since it uses less digits than its factorization.

21925931103760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274074138810 (or 274074138804 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 49.

The spelling of 21925931103760 in words is "twenty-one trillion, nine hundred twenty-five billion, nine hundred thirty-one million, one hundred three thousand, seven hundred sixty".