20776752510 has 64 divisors (see below), whose sum is σ = 52515198720. Its totient is φ = 5246208000.

The previous prime is 20776752509. The next prime is 20776752511. The reversal of 20776752510 is 1525767702.

It is an interprime number because it is at equal distance from previous prime (20776752509) and next prime (20776752511).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20776752511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1274974 + ... + 1291166.

It is an arithmetic number, because the mean of its divisors is an integer number (820549980).

Almost surely, 2^20776752510 is an apocalyptic number.

20776752510 is an abundant number, since it is smaller than the sum of its proper divisors (31738446210).

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

20776752510 is a wasteful number, since it uses less digits than its factorization.

20776752510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18473.

The product of its (nonzero) digits is 205800, while the sum is 42.

The spelling of 20776752510 in words is "twenty billion, seven hundred seventy-six million, seven hundred fifty-two thousand, five hundred ten".