77870091513 has 8 divisors (see below), whose sum is σ = 103906232928. Its totient is φ = 51873672224.

The previous prime is 77870091499. The next prime is 77870091527. The reversal of 77870091513 is 31519007877.

It is an interprime number because it is at equal distance from previous prime (77870091499) and next prime (77870091527).

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 77870091513 - 2⁹ = 77870091001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77870091713) 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, 9925956 + ... + 9933797.

It is an arithmetic number, because the mean of its divisors is an integer number (12988279116).

Almost surely, 2^77870091513 is an apocalyptic number.

It is an amenable number.

77870091513 is a deficient number, since it is larger than the sum of its proper divisors (26036141415).

77870091513 is a wasteful number, since it uses less digits than its factorization.

77870091513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19861063.

The product of its (nonzero) digits is 370440, while the sum is 48.

The spelling of 77870091513 in words is "seventy-seven billion, eight hundred seventy million, ninety-one thousand, five hundred thirteen".