21692758152871 has 16 divisors (see below), whose sum is σ = 24595185408640. Its totient is φ = 18966941791200.

The previous prime is 21692758152839. The next prime is 21692758152913. The reversal of 21692758152871 is 17825185729612.

It is not a de Polignac number, because 21692758152871 - 2⁵ = 21692758152839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21692758152971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6059925 + ... + 8950318.

It is an arithmetic number, because the mean of its divisors is an integer number (1537199088040).

Almost surely, 2^{21692758152871} is an apocalyptic number.

21692758152871 is a deficient number, since it is larger than the sum of its proper divisors (2902427255769).

21692758152871 is a wasteful number, since it uses less digits than its factorization.

21692758152871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15016126.

The product of its digits is 33868800, while the sum is 64.

The spelling of 21692758152871 in words is "twenty-one trillion, six hundred ninety-two billion, seven hundred fifty-eight million, one hundred fifty-two thousand, eight hundred seventy-one".