20769427632 has 40 divisors (see below), whose sum is σ = 53671564800. Its totient is φ = 6920921920.

The previous prime is 20769427621. The next prime is 20769427633. The reversal of 20769427632 is 23672496702.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (20769427633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85369 + ... + 220967.

It is an arithmetic number, because the mean of its divisors is an integer number (1341789120).

Almost surely, 2^20769427632 is an apocalyptic number.

It is an amenable number.

20769427632 is an abundant number, since it is smaller than the sum of its proper divisors (32902137168).

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

20769427632 is a wasteful number, since it uses less digits than its factorization.

20769427632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138801 (or 138795 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 48.

The spelling of 20769427632 in words is "twenty billion, seven hundred sixty-nine million, four hundred twenty-seven thousand, six hundred thirty-two".