20444637522 has 32 divisors (see below), whose sum is σ = 41396060160. Its totient is φ = 6730471440.

The previous prime is 20444637503. The next prime is 20444637533. The reversal of 20444637522 is 22573644402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2066247 + ... + 2076117.

It is an arithmetic number, because the mean of its divisors is an integer number (1293626880).

Almost surely, 2^20444637522 is an apocalyptic number.

20444637522 is an abundant number, since it is smaller than the sum of its proper divisors (20951422638).

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

20444637522 is a wasteful number, since it uses less digits than its factorization.

20444637522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14118.

The product of its (nonzero) digits is 322560, while the sum is 39.

The spelling of 20444637522 in words is "twenty billion, four hundred forty-four million, six hundred thirty-seven thousand, five hundred twenty-two".