21626544362 has 16 divisors (see below), whose sum is σ = 32649790272. Its totient is φ = 10743425280.

The previous prime is 21626544343. The next prime is 21626544389. The reversal of 21626544362 is 26344562612.

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, 268187 + ... + 339377.

It is an arithmetic number, because the mean of its divisors is an integer number (2040611892).

Almost surely, 2^21626544362 is an apocalyptic number.

21626544362 is a deficient number, since it is larger than the sum of its proper divisors (11023245910).

21626544362 is a wasteful number, since it uses less digits than its factorization.

21626544362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72173.

The product of its digits is 414720, while the sum is 41.

The spelling of 21626544362 in words is "twenty-one billion, six hundred twenty-six million, five hundred forty-four thousand, three hundred sixty-two".