977508336981 has 32 divisors (see below), whose sum is σ = 1462528972800. Its totient is φ = 575652890880.

The previous prime is 977508336941. The next prime is 977508337019. The reversal of 977508336981 is 189633805779.

It is not a de Polignac number, because 977508336981 - 2⁷ = 977508336853 is a prime.

It is a super-2 number, since 2×977508336981² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977508336941) 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 31 ways as a sum of consecutive naturals, for example, 2051476 + ... + 2482653.

It is an arithmetic number, because the mean of its divisors is an integer number (45704030400).

Almost surely, 2^977508336981 is an apocalyptic number.

It is an amenable number.

977508336981 is a deficient number, since it is larger than the sum of its proper divisors (485020635819).

977508336981 is a wasteful number, since it uses less digits than its factorization.

977508336981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4534329.

The product of its (nonzero) digits is 68584320, while the sum is 66.

The spelling of 977508336981 in words is "nine hundred seventy-seven billion, five hundred eight million, three hundred thirty-six thousand, nine hundred eighty-one".