20756570367 has 24 divisors (see below), whose sum is σ = 29978667648. Its totient is φ = 12768756000.

The previous prime is 20756570357. The next prime is 20756570371. The reversal of 20756570367 is 76307565702.

It is not a de Polignac number, because 20756570367 - 2⁸ = 20756570111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20756570347) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1947142 + ... + 1957772.

It is an arithmetic number, because the mean of its divisors is an integer number (1249111152).

Almost surely, 2^20756570367 is an apocalyptic number.

20756570367 is a deficient number, since it is larger than the sum of its proper divisors (9222097281).

20756570367 is a wasteful number, since it uses less digits than its factorization.

20756570367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14511 (or 14498 counting only the distinct ones).

The product of its (nonzero) digits is 1852200, while the sum is 48.

The spelling of 20756570367 in words is "twenty billion, seven hundred fifty-six million, five hundred seventy thousand, three hundred sixty-seven".