977388365956 has 24 divisors (see below), whose sum is σ = 1747008619776. Its totient is φ = 478245270720.

The previous prime is 977388365903. The next prime is 977388365959. The reversal of 977388365956 is 659563883779.

It is a super-2 number, since 2×977388365956² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (977388365959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1514760 + ... + 2061376.

It is an arithmetic number, because the mean of its divisors is an integer number (72792025824).

Almost surely, 2^977388365956 is an apocalyptic number.

It is an amenable number.

977388365956 is a deficient number, since it is larger than the sum of its proper divisors (769620253820).

977388365956 is a wasteful number, since it uses less digits than its factorization.

977388365956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556179 (or 556177 counting only the distinct ones).

The product of its digits is 2057529600, while the sum is 76.

The spelling of 977388365956 in words is "nine hundred seventy-seven billion, three hundred eighty-eight million, three hundred sixty-five thousand, nine hundred fifty-six".