21726632406275 has 12 divisors (see below), whose sum is σ = 27026011651632. Its totient is φ = 17326475300640.

The previous prime is 21726632406229. The next prime is 21726632406289. The reversal of 21726632406275 is 57260423662712.

It is not a de Polignac number, because 21726632406275 - 2⁸ = 21726632406019 is a prime.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 1370757527 + ... + 1370773376.

It is an arithmetic number, because the mean of its divisors is an integer number (2252167637636).

Almost surely, 2^{21726632406275} is an apocalyptic number.

21726632406275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21726632406275 is a deficient number, since it is larger than the sum of its proper divisors (5299379245357).

21726632406275 is a wasteful number, since it uses less digits than its factorization.

21726632406275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741531230 (or 2741531225 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 53.

The spelling of 21726632406275 in words is "twenty-one trillion, seven hundred twenty-six billion, six hundred thirty-two million, four hundred six thousand, two hundred seventy-five".