20502350634 has 16 divisors (see below), whose sum is σ = 43162843680. Its totient is φ = 6474426480.

The previous prime is 20502350633. The next prime is 20502350639. The reversal of 20502350634 is 43605320502.

It is not an unprimeable number, because it can be changed into a prime (20502350633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89922477 + ... + 89922704.

It is an arithmetic number, because the mean of its divisors is an integer number (2697677730).

Almost surely, 2^20502350634 is an apocalyptic number.

20502350634 is an abundant number, since it is smaller than the sum of its proper divisors (22660493046).

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

20502350634 is a wasteful number, since it uses less digits than its factorization.

20502350634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179845205.

The product of its (nonzero) digits is 21600, while the sum is 30.

The spelling of 20502350634 in words is "twenty billion, five hundred two million, three hundred fifty thousand, six hundred thirty-four".