1977307639357 has 8 divisors (see below), whose sum is σ = 1992981527552. Its totient is φ = 1961635384800.

The previous prime is 1977307639297. The next prime is 1977307639393. The reversal of 1977307639357 is 7539367037791.

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

It is a cyclic number.

It is not a de Polignac number, because 1977307639357 - 2³⁵ = 1942947900989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1977307639292 and 1977307639301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1077307639357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2081857 + ... + 2879017.

It is an arithmetic number, because the mean of its divisors is an integer number (249122690944).

Almost surely, 2^{1977307639357} is an apocalyptic number.

It is an amenable number.

1977307639357 is a deficient number, since it is larger than the sum of its proper divisors (15673888195).

1977307639357 is a wasteful number, since it uses less digits than its factorization.

1977307639357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816819.

The product of its (nonzero) digits is 157529610, while the sum is 67.

The spelling of 1977307639357 in words is "one trillion, nine hundred seventy-seven billion, three hundred seven million, six hundred thirty-nine thousand, three hundred fifty-seven".