77664063313 has 4 divisors (see below), whose sum is σ = 79316490240. Its totient is φ = 76011636388.

The previous prime is 77664063307. The next prime is 77664063317. The reversal of 77664063313 is 31336046677.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77664063313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77664063317) 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, 826213393 + ... + 826213486.

It is an arithmetic number, because the mean of its divisors is an integer number (19829122560).

Almost surely, 2^77664063313 is an apocalyptic number.

It is an amenable number.

77664063313 is a deficient number, since it is larger than the sum of its proper divisors (1652426927).

77664063313 is a wasteful number, since it uses less digits than its factorization.

77664063313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652426926.

The product of its (nonzero) digits is 1143072, while the sum is 46.

The spelling of 77664063313 in words is "seventy-seven billion, six hundred sixty-four million, sixty-three thousand, three hundred thirteen".