77391901137 has 8 divisors (see below), whose sum is σ = 103207426560. Its totient is φ = 51585488240.

The previous prime is 77391901129. The next prime is 77391901177. The reversal of 77391901137 is 73110919377.

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 77391901137 - 2³ = 77391901129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77391901127) 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, 2258289 + ... + 2292302.

It is an arithmetic number, because the mean of its divisors is an integer number (12900928320).

Almost surely, 2^77391901137 is an apocalyptic number.

It is an amenable number.

77391901137 is a deficient number, since it is larger than the sum of its proper divisors (25815525423).

77391901137 is a wasteful number, since it uses less digits than its factorization.

77391901137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4556263.

The product of its (nonzero) digits is 250047, while the sum is 48.

The spelling of 77391901137 in words is "seventy-seven billion, three hundred ninety-one million, nine hundred one thousand, one hundred thirty-seven".