77115373499 has 4 divisors (see below), whose sum is σ = 77122340064. Its totient is φ = 77108406936.

The previous prime is 77115373487. The next prime is 77115373561. The reversal of 77115373499 is 99437351177.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77115373499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77115373459) 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, 3466652 + ... + 3488825.

It is an arithmetic number, because the mean of its divisors is an integer number (19280585016).

Almost surely, 2^77115373499 is an apocalyptic number.

77115373499 is a deficient number, since it is larger than the sum of its proper divisors (6966565).

77115373499 is a wasteful number, since it uses less digits than its factorization.

77115373499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6966564.

The product of its digits is 5000940, while the sum is 56.

The spelling of 77115373499 in words is "seventy-seven billion, one hundred fifteen million, three hundred seventy-three thousand, four hundred ninety-nine".