20663132554 has 16 divisors (see below), whose sum is σ = 31867439616. Its totient is φ = 10041267600.

The previous prime is 20663132533. The next prime is 20663132569. The reversal of 20663132554 is 45523136602.

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 85842 + ... + 220669.

It is an arithmetic number, because the mean of its divisors is an integer number (1991714976).

Almost surely, 2^20663132554 is an apocalyptic number.

20663132554 is a deficient number, since it is larger than the sum of its proper divisors (11204307062).

20663132554 is a wasteful number, since it uses less digits than its factorization.

20663132554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307461.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 20663132554 in words is "twenty billion, six hundred sixty-three million, one hundred thirty-two thousand, five hundred fifty-four".