977357533638 has 8 divisors (see below), whose sum is σ = 1954715067288. Its totient is φ = 325785844544.

The previous prime is 977357533631. The next prime is 977357533639. The reversal of 977357533638 is 836335753779.

977357533638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

977357533638 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977357533631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81446461131 + ... + 81446461142.

It is an arithmetic number, because the mean of its divisors is an integer number (244339383411).

Almost surely, 2^977357533638 is an apocalyptic number.

977357533638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

977357533638 is a wasteful number, since it uses less digits than its factorization.

977357533638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162892922278.

The product of its digits is 300056400, while the sum is 66.

The spelling of 977357533638 in words is "nine hundred seventy-seven billion, three hundred fifty-seven million, five hundred thirty-three thousand, six hundred thirty-eight".