77906736375 has 64 divisors (see below), whose sum is σ = 139828381056. Its totient is φ = 38293785600.

The previous prime is 77906736373. The next prime is 77906736389. The reversal of 77906736375 is 57363760977.

It is a happy number.

It is not a de Polignac number, because 77906736375 - 2¹ = 77906736373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77906736373) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3171139 + ... + 3195611.

It is an arithmetic number, because the mean of its divisors is an integer number (2184818454).

Almost surely, 2^77906736375 is an apocalyptic number.

77906736375 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

77906736375 is a deficient number, since it is larger than the sum of its proper divisors (61921644681).

77906736375 is a wasteful number, since it uses less digits than its factorization.

77906736375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25157 (or 25147 counting only the distinct ones).

The product of its (nonzero) digits is 35006580, while the sum is 60.

The spelling of 77906736375 in words is "seventy-seven billion, nine hundred six million, seven hundred thirty-six thousand, three hundred seventy-five".