20071677764 has 12 divisors (see below), whose sum is σ = 35136080784. Its totient is φ = 10032797544.

The previous prime is 20071677757. The next prime is 20071677799. The reversal of 20071677764 is 46777617002.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 745454 + ... + 771909.

It is an arithmetic number, because the mean of its divisors is an integer number (2928006732).

Almost surely, 2^20071677764 is an apocalyptic number.

It is an amenable number.

20071677764 is a deficient number, since it is larger than the sum of its proper divisors (15064403020).

20071677764 is a wasteful number, since it uses less digits than its factorization.

20071677764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520674 (or 1520672 counting only the distinct ones).

The product of its (nonzero) digits is 691488, while the sum is 47.

The spelling of 20071677764 in words is "twenty billion, seventy-one million, six hundred seventy-seven thousand, seven hundred sixty-four".