20776882628 has 12 divisors (see below), whose sum is σ = 36371375040. Its totient is φ = 10385061192.

The previous prime is 20776882561. The next prime is 20776882669. The reversal of 20776882628 is 82628867702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831176 + ... + 855807.

It is an arithmetic number, because the mean of its divisors is an integer number (3030947920).

Almost surely, 2^20776882628 is an apocalyptic number.

It is an amenable number.

20776882628 is a deficient number, since it is larger than the sum of its proper divisors (15594492412).

20776882628 is a wasteful number, since it uses less digits than its factorization.

20776882628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690066 (or 1690064 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 20776882628 in words is "twenty billion, seven hundred seventy-six million, eight hundred eighty-two thousand, six hundred twenty-eight".