21712125962868 has 48 divisors (see below), whose sum is σ = 55756320290496. Its totient is φ = 6521207042560.

The previous prime is 21712125962837. The next prime is 21712125962899. The reversal of 21712125962868 is 86826952121712.

It is an interprime number because it is at equal distance from previous prime (21712125962837) and next prime (21712125962899).

It is a super-2 number, since 2×21712125962868² (a number of 27 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, 727798371 + ... + 727828202.

It is an arithmetic number, because the mean of its divisors is an integer number (1161590006052).

Almost surely, 2^{21712125962868} is an apocalyptic number.

It is an amenable number.

21712125962868 is an abundant number, since it is smaller than the sum of its proper divisors (34044194327628).

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

21712125962868 is a wasteful number, since it uses less digits than its factorization.

21712125962868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455626704 (or 1455626702 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 60.

The spelling of 21712125962868 in words is "twenty-one trillion, seven hundred twelve billion, one hundred twenty-five million, nine hundred sixty-two thousand, eight hundred sixty-eight".