977899994771 has 8 divisors (see below), whose sum is σ = 1166191298304. Its totient is φ = 801756517320.

The previous prime is 977899994711. The next prime is 977899994789. The reversal of 977899994771 is 177499998779.

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

It is a cyclic number.

It is not a de Polignac number, because 977899994771 - 2¹⁴ = 977899978387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (977899994711) 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, 3036956345 + ... + 3036956666.

It is an arithmetic number, because the mean of its divisors is an integer number (145773912288).

Almost surely, 2^977899994771 is an apocalyptic number.

977899994771 is a deficient number, since it is larger than the sum of its proper divisors (188291303533).

977899994771 is a wasteful number, since it uses less digits than its factorization.

977899994771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6073913041.

The product of its digits is 4536852768, while the sum is 86.

The spelling of 977899994771 in words is "nine hundred seventy-seven billion, eight hundred ninety-nine million, nine hundred ninety-four thousand, seven hundred seventy-one".