20502764530 has 32 divisors (see below), whose sum is σ = 38864136960. Its totient is φ = 7766110080.

The previous prime is 20502764519. The next prime is 20502764533. The reversal of 20502764530 is 3546720502.

It is a super-2 number, since 2×20502764530² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20502764533) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 441687 + ... + 485893.

It is an arithmetic number, because the mean of its divisors is an integer number (1214504280).

Almost surely, 2^20502764530 is an apocalyptic number.

20502764530 is a deficient number, since it is larger than the sum of its proper divisors (18361372430).

20502764530 is a wasteful number, since it uses less digits than its factorization.

20502764530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46674.

The product of its (nonzero) digits is 50400, while the sum is 34.

The spelling of 20502764530 in words is "twenty billion, five hundred two million, seven hundred sixty-four thousand, five hundred thirty".