76639064949 has 8 divisors (see below), whose sum is σ = 113539355520. Its totient is φ = 51092709948.

The previous prime is 76639064939. The next prime is 76639064963. The reversal of 76639064949 is 94946093667.

It is not a de Polignac number, because 76639064949 - 2⁵ = 76639064917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76639064939) 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, 1419241917 + ... + 1419241970.

It is an arithmetic number, because the mean of its divisors is an integer number (14192419440).

Almost surely, 2^76639064949 is an apocalyptic number.

It is an amenable number.

76639064949 is a deficient number, since it is larger than the sum of its proper divisors (36900290571).

76639064949 is a wasteful number, since it uses less digits than its factorization.

76639064949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838483896 (or 2838483890 counting only the distinct ones).

The product of its (nonzero) digits is 52907904, while the sum is 63.

The spelling of 76639064949 in words is "seventy-six billion, six hundred thirty-nine million, sixty-four thousand, nine hundred forty-nine".