77006799902121 has 8 divisors (see below), whose sum is σ = 102678246909600. Its totient is φ = 51336609748032.

The previous prime is 77006799902117. The next prime is 77006799902161. The reversal of 77006799902121 is 12120999760077.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77006799902121 - 2² = 77006799902117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77006799902161) 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, 314070375 + ... + 314315468.

It is an arithmetic number, because the mean of its divisors is an integer number (12834780863700).

Almost surely, 2^{77006799902121} is an apocalyptic number.

It is an amenable number.

77006799902121 is a deficient number, since it is larger than the sum of its proper divisors (25671447007479).

77006799902121 is a wasteful number, since it uses less digits than its factorization.

77006799902121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628426695.

The product of its (nonzero) digits is 6001128, while the sum is 60.

The spelling of 77006799902121 in words is "seventy-seven trillion, six billion, seven hundred ninety-nine million, nine hundred two thousand, one hundred twenty-one".