77736974799 has 16 divisors (see below), whose sum is σ = 114664529664. Its totient is φ = 46449748800.

The previous prime is 77736974797. The next prime is 77736974807. The reversal of 77736974799 is 99747963777.

It is not a de Polignac number, because 77736974799 - 2¹ = 77736974797 is a prime.

It is a super-2 number, since 2×77736974799² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77736974799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77736974797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16586854 + ... + 16591539.

It is an arithmetic number, because the mean of its divisors is an integer number (7166533104).

Almost surely, 2^77736974799 is an apocalyptic number.

77736974799 is a deficient number, since it is larger than the sum of its proper divisors (36927554865).

77736974799 is a wasteful number, since it uses less digits than its factorization.

77736974799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33178478.

The product of its digits is 882165816, while the sum is 75.

The spelling of 77736974799 in words is "seventy-seven billion, seven hundred thirty-six million, nine hundred seventy-four thousand, seven hundred ninety-nine".