977549775460 has 48 divisors (see below), whose sum is σ = 2059097331312. Its totient is φ = 389831270400.

The previous prime is 977549775443. The next prime is 977549775467. The reversal of 977549775460 is 64577945779.

It can be written as a sum of positive squares in 8 ways, for example, as 342398016 + 977207377444 = 18504^2 + 988538^2 .

It is a super-4 number, since 4×977549775460⁴ (a number of 49 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 977549775460.

It is not an unprimeable number, because it can be changed into a prime (977549775467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43202950 + ... + 43225570.

It is an arithmetic number, because the mean of its divisors is an integer number (42897861069).

Almost surely, 2^977549775460 is an apocalyptic number.

It is an amenable number.

977549775460 is an abundant number, since it is smaller than the sum of its proper divisors (1081547555852).

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

977549775460 is a wasteful number, since it uses less digits than its factorization.

977549775460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29104 (or 29102 counting only the distinct ones).

The product of its (nonzero) digits is 466754400, while the sum is 70.

The spelling of 977549775460 in words is "nine hundred seventy-seven billion, five hundred forty-nine million, seven hundred seventy-five thousand, four hundred sixty".