76999699970 has 16 divisors (see below), whose sum is σ = 138606095160. Its totient is φ = 30798405504.

The previous prime is 76999699969. The next prime is 76999700027. The reversal of 76999699970 is 7999699967.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 39620504401 + 37379195569 = 199049^2 + 193337^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49094 + ... + 395486.

Almost surely, 2^76999699970 is an apocalyptic number.

76999699970 is a deficient number, since it is larger than the sum of its proper divisors (61606395190).

76999699970 is a wasteful number, since it uses less digits than its factorization.

76999699970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368629.

The product of its (nonzero) digits is 937461924, while the sum is 80.

The spelling of 76999699970 in words is "seventy-six billion, nine hundred ninety-nine million, six hundred ninety-nine thousand, nine hundred seventy".