20587976742 has 16 divisors (see below), whose sum is σ = 42504210432. Its totient is φ = 6641282760.

The previous prime is 20587976687. The next prime is 20587976743. The reversal of 20587976742 is 24767978502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20587976743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55343838 + ... + 55344209.

It is an arithmetic number, because the mean of its divisors is an integer number (2656513152).

Almost surely, 2^20587976742 is an apocalyptic number.

20587976742 is an abundant number, since it is smaller than the sum of its proper divisors (21916233690).

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

20587976742 is a wasteful number, since it uses less digits than its factorization.

20587976742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110688083.

The product of its (nonzero) digits is 11854080, while the sum is 57.

The spelling of 20587976742 in words is "twenty billion, five hundred eighty-seven million, nine hundred seventy-six thousand, seven hundred forty-two".