77715050379 has 48 divisors (see below), whose sum is σ = 112528221696. Its totient is φ = 47646325440.

The previous prime is 77715050279. The next prime is 77715050381. The reversal of 77715050379 is 97305051777.

It is not a de Polignac number, because 77715050379 - 2¹⁶ = 77714984843 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (77715050279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4578382 + ... + 4595324.

It is an arithmetic number, because the mean of its divisors is an integer number (2344337952).

Almost surely, 2^77715050379 is an apocalyptic number.

77715050379 is a deficient number, since it is larger than the sum of its proper divisors (34813171317).

77715050379 is a wasteful number, since it uses less digits than its factorization.

77715050379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17088 (or 17057 counting only the distinct ones).

The product of its (nonzero) digits is 1620675, while the sum is 51.

The spelling of 77715050379 in words is "seventy-seven billion, seven hundred fifteen million, fifty thousand, three hundred seventy-nine".