977357533640 has 32 divisors (see below), whose sum is σ = 2200521600000. Its totient is φ = 390682186944.

The previous prime is 977357533639. The next prime is 977357533643. The reversal of 977357533640 is 46335753779.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 977357533640.

It is not an unprimeable number, because it can be changed into a prime (977357533643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8090120 + ... + 8210039.

It is an arithmetic number, because the mean of its divisors is an integer number (68766300000).

Almost surely, 2^977357533640 is an apocalyptic number.

It is an amenable number.

977357533640 is an abundant number, since it is smaller than the sum of its proper divisors (1223164066360).

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

977357533640 is a wasteful number, since it uses less digits than its factorization.

977357533640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16301669 (or 16301665 counting only the distinct ones).

The product of its (nonzero) digits is 50009400, while the sum is 59.

The spelling of 977357533640 in words is "nine hundred seventy-seven billion, three hundred fifty-seven million, five hundred thirty-three thousand, six hundred forty".