766616748377 has 4 divisors (see below), whose sum is σ = 766637754240. Its totient is φ = 766595742516.

The previous prime is 766616748371. The next prime is 766616748437. The reversal of 766616748377 is 773847616667.

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 not a de Polignac number, because 766616748377 - 2²⁴ = 766599971161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (766616748371) 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, 10448093 + ... + 10521210.

It is an arithmetic number, because the mean of its divisors is an integer number (191659438560).

Almost surely, 2^766616748377 is an apocalyptic number.

It is an amenable number.

766616748377 is a deficient number, since it is larger than the sum of its proper divisors (21005863).

766616748377 is a wasteful number, since it uses less digits than its factorization.

766616748377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21005862.

The product of its digits is 298722816, while the sum is 68.

The spelling of 766616748377 in words is "seven hundred sixty-six billion, six hundred sixteen million, seven hundred forty-eight thousand, three hundred seventy-seven".