20165617522 has 16 divisors (see below), whose sum is σ = 31132302912. Its totient is φ = 9792422640.

The previous prime is 20165617487. The next prime is 20165617543. The reversal of 20165617522 is 22571656102.

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, 1050273 + ... + 1069300.

It is an arithmetic number, because the mean of its divisors is an integer number (1945768932).

Almost surely, 2^20165617522 is an apocalyptic number.

20165617522 is a deficient number, since it is larger than the sum of its proper divisors (10966685390).

20165617522 is a wasteful number, since it uses less digits than its factorization.

20165617522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119713.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 20165617522 in words is "twenty billion, one hundred sixty-five million, six hundred seventeen thousand, five hundred twenty-two".