77383720379 has 16 divisors (see below), whose sum is σ = 93038803200. Its totient is φ = 62956237344.

The previous prime is 77383720369. The next prime is 77383720399. The reversal of 77383720379 is 97302738377.

It is not a de Polignac number, because 77383720379 - 2¹² = 77383716283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77383720339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3218537 + ... + 3242490.

It is an arithmetic number, because the mean of its divisors is an integer number (5814925200).

Almost surely, 2^77383720379 is an apocalyptic number.

77383720379 is a deficient number, since it is larger than the sum of its proper divisors (15655082821).

77383720379 is a wasteful number, since it uses less digits than its factorization.

77383720379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6461122.

The product of its (nonzero) digits is 9335088, while the sum is 56.

The spelling of 77383720379 in words is "seventy-seven billion, three hundred eighty-three million, seven hundred twenty thousand, three hundred seventy-nine".