77364975499 has 24 divisors (see below), whose sum is σ = 90969395328. Its totient is φ = 65596285440.

The previous prime is 77364975437. The next prime is 77364975581. The reversal of 77364975499 is 99457946377.

It is not a de Polignac number, because 77364975499 - 2¹¹ = 77364973451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77364975199) 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 23 ways as a sum of consecutive naturals, for example, 16447782 + ... + 16452484.

It is an arithmetic number, because the mean of its divisors is an integer number (3790391472).

Almost surely, 2^77364975499 is an apocalyptic number.

77364975499 is a deficient number, since it is larger than the sum of its proper divisors (13604419829).

77364975499 is a wasteful number, since it uses less digits than its factorization.

77364975499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8275 (or 8268 counting only the distinct ones).

The product of its digits is 360067680, while the sum is 70.

The spelling of 77364975499 in words is "seventy-seven billion, three hundred sixty-four million, nine hundred seventy-five thousand, four hundred ninety-nine".