21426617370522 has 64 divisors (see below), whose sum is σ = 52742976572160. Its totient is φ = 5650918815744.

The previous prime is 21426617370517. The next prime is 21426617370559. The reversal of 21426617370522 is 22507371662412.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100690228 + ... + 100902800.

It is an arithmetic number, because the mean of its divisors is an integer number (824109008940).

Almost surely, 2^{21426617370522} is an apocalyptic number.

21426617370522 is an abundant number, since it is smaller than the sum of its proper divisors (31316359201638).

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

21426617370522 is a wasteful number, since it uses less digits than its factorization.

21426617370522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397207.

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 21426617370522 in words is "twenty-one trillion, four hundred twenty-six billion, six hundred seventeen million, three hundred seventy thousand, five hundred twenty-two".