20016553464 has 48 divisors (see below), whose sum is σ = 56219337720. Its totient is φ = 6672183840.

The previous prime is 20016553441. The next prime is 20016553471. The reversal of 20016553464 is 46435561002.

20016553464 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 65 + 534 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5146347 + ... + 5150234.

Almost surely, 2^20016553464 is an apocalyptic number.

20016553464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20016553464 is an abundant number, since it is smaller than the sum of its proper divisors (36202784256).

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

20016553464 is a wasteful number, since it uses less digits than its factorization.

20016553464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10296602 (or 10296586 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 20016553464 in words is "twenty billion, sixteen million, five hundred fifty-three thousand, four hundred sixty-four".