21626275154 has 32 divisors (see below), whose sum is σ = 36665006400. Its totient is φ = 9476568640.

The previous prime is 21626275141. The next prime is 21626275157. The reversal of 21626275154 is 45157262612.

It is not an unprimeable number, because it can be changed into a prime (21626275157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394724 + ... + 446160.

It is an arithmetic number, because the mean of its divisors is an integer number (1145781450).

Almost surely, 2^21626275154 is an apocalyptic number.

21626275154 is a deficient number, since it is larger than the sum of its proper divisors (15038731246).

21626275154 is a wasteful number, since it uses less digits than its factorization.

21626275154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52138.

The product of its digits is 201600, while the sum is 41.

The spelling of 21626275154 in words is "twenty-one billion, six hundred twenty-six million, two hundred seventy-five thousand, one hundred fifty-four".