21316622546026 has 16 divisors (see below), whose sum is σ = 32371834521600. Its totient is φ = 10526805635328.

The previous prime is 21316622545979. The next prime is 21316622546033. The reversal of 21316622546026 is 62064522661312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198595306 + ... + 198702613.

It is an arithmetic number, because the mean of its divisors is an integer number (2023239657600).

Almost surely, 2^{21316622546026} is an apocalyptic number.

21316622546026 is a deficient number, since it is larger than the sum of its proper divisors (11055211975574).

21316622546026 is a wasteful number, since it uses less digits than its factorization.

21316622546026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397298253.

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 21316622546026 in words is "twenty-one trillion, three hundred sixteen billion, six hundred twenty-two million, five hundred forty-six thousand, twenty-six".