977988966783 has 8 divisors (see below), whose sum is σ = 1331729657088. Its totient is φ = 638120460504.

The previous prime is 977988966641. The next prime is 977988966847. The reversal of 977988966783 is 387669889779.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 977988966783 - 2⁸ = 977988966527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 977988966783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977988961783) 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, 3468045841 + ... + 3468046122.

It is an arithmetic number, because the mean of its divisors is an integer number (166466207136).

Almost surely, 2^977988966783 is an apocalyptic number.

977988966783 is a deficient number, since it is larger than the sum of its proper divisors (353740690305).

977988966783 is a wasteful number, since it uses less digits than its factorization.

977988966783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6936092013.

The product of its digits is 13826598912, while the sum is 87.

The spelling of 977988966783 in words is "nine hundred seventy-seven billion, nine hundred eighty-eight million, nine hundred sixty-six thousand, seven hundred eighty-three".