977685774140 has 12 divisors (see below), whose sum is σ = 2053140125736. Its totient is φ = 391074309648.

The previous prime is 977685774097. The next prime is 977685774173. The reversal of 977685774140 is 41477586779.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24442144334 + ... + 24442144373.

It is an arithmetic number, because the mean of its divisors is an integer number (171095010478).

Almost surely, 2^977685774140 is an apocalyptic number.

It is an amenable number.

977685774140 is an abundant number, since it is smaller than the sum of its proper divisors (1075454351596).

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

977685774140 is a wasteful number, since it uses less digits than its factorization.

977685774140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48884288716 (or 48884288714 counting only the distinct ones).

The product of its (nonzero) digits is 82978560, while the sum is 65.

The spelling of 977685774140 in words is "nine hundred seventy-seven billion, six hundred eighty-five million, seven hundred seventy-four thousand, one hundred forty".