20764403632 has 40 divisors (see below), whose sum is σ = 47461501952. Its totient is φ = 8611963200.

The previous prime is 20764403623. The next prime is 20764403659. The reversal of 20764403632 is 23630446702.

It is a super-2 number, since 2×20764403632² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20764403591 and 20764403600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2986794 + ... + 2993737.

Almost surely, 2^20764403632 is an apocalyptic number.

It is an amenable number.

20764403632 is an abundant number, since it is smaller than the sum of its proper divisors (26697098320).

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

20764403632 is a wasteful number, since it uses less digits than its factorization.

20764403632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5980577 (or 5980571 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 37.

The spelling of 20764403632 in words is "twenty billion, seven hundred sixty-four million, four hundred three thousand, six hundred thirty-two".