77208627513 has 4 divisors (see below), whose sum is σ = 102944836688. Its totient is φ = 51472418340.

The previous prime is 77208627493. The next prime is 77208627539. The reversal of 77208627513 is 31572680277.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 77208627513 - 2¹⁰ = 77208626489 is a prime.

It is a super-2 number, since 2×77208627513² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77208667513) 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, 12868104583 + ... + 12868104588.

It is an arithmetic number, because the mean of its divisors is an integer number (25736209172).

Almost surely, 2^77208627513 is an apocalyptic number.

It is an amenable number.

77208627513 is a deficient number, since it is larger than the sum of its proper divisors (25736209175).

77208627513 is a wasteful number, since it uses less digits than its factorization.

77208627513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25736209174.

The product of its (nonzero) digits is 987840, while the sum is 48.

The spelling of 77208627513 in words is "seventy-seven billion, two hundred eight million, six hundred twenty-seven thousand, five hundred thirteen".