18761005977 has 12 divisors (see below), whose sum is σ = 29098703376. Its totient is φ = 10720574760.

The previous prime is 18761005937. The next prime is 18761005997. The reversal of 18761005977 is 77950016781.

It is not a de Polignac number, because 18761005977 - 2¹⁰ = 18761004953 is a prime.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18761005937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63812799 + ... + 63813092.

It is an arithmetic number, because the mean of its divisors is an integer number (2424891948).

Almost surely, 2^18761005977 is an apocalyptic number.

It is an amenable number.

18761005977 is a deficient number, since it is larger than the sum of its proper divisors (10337697399).

18761005977 is a wasteful number, since it uses less digits than its factorization.

18761005977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127625908 (or 127625901 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 51.

The spelling of 18761005977 in words is "eighteen billion, seven hundred sixty-one million, five thousand, nine hundred seventy-seven".