20882615634 has 12 divisors (see below), whose sum is σ = 45245667246. Its totient is φ = 6960871872.

The previous prime is 20882615617. The next prime is 20882615639. The reversal of 20882615634 is 43651628802.

20882615634 is a `hidden beast` number, since 2 + 0 + 8 + 8 + 2 + 6 + 1 + 5 + 634 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12962505609 + 7920110025 = 113853^2 + 88995^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20882615634.

It is not an unprimeable number, because it can be changed into a prime (20882615639) 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 5 ways as a sum of consecutive naturals, for example, 580072639 + ... + 580072674.

Almost surely, 2^20882615634 is an apocalyptic number.

20882615634 is an abundant number, since it is smaller than the sum of its proper divisors (24363051612).

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

20882615634 is a wasteful number, since it uses less digits than its factorization.

20882615634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160145321 (or 1160145318 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 20882615634 in words is "twenty billion, eight hundred eighty-two million, six hundred fifteen thousand, six hundred thirty-four".