20709007832634 has 32 divisors (see below), whose sum is σ = 45183461045184. Its totient is φ = 6275433137280.

The previous prime is 20709007832609. The next prime is 20709007832699. The reversal of 20709007832634 is 43623870090702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25691112 + ... + 26484924.

It is an arithmetic number, because the mean of its divisors is an integer number (1411983157662).

Almost surely, 2^{20709007832634} is an apocalyptic number.

20709007832634 is an abundant number, since it is smaller than the sum of its proper divisors (24474453212550).

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

20709007832634 is a wasteful number, since it uses less digits than its factorization.

20709007832634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189102.

The product of its (nonzero) digits is 3048192, while the sum is 51.

The spelling of 20709007832634 in words is "twenty trillion, seven hundred nine billion, seven million, eight hundred thirty-two thousand, six hundred thirty-four".