77172725307 has 32 divisors (see below), whose sum is σ = 105020375040. Its totient is φ = 50396148000.

The previous prime is 77172725269. The next prime is 77172725323. The reversal of 77172725307 is 70352727177.

It is not a de Polignac number, because 77172725307 - 2¹⁰ = 77172724283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77172725327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53628694 + ... + 53630132.

It is an arithmetic number, because the mean of its divisors is an integer number (3281886720).

Almost surely, 2^77172725307 is an apocalyptic number.

77172725307 is a deficient number, since it is larger than the sum of its proper divisors (27847649733).

77172725307 is a wasteful number, since it uses less digits than its factorization.

77172725307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823.

The product of its (nonzero) digits is 1008420, while the sum is 48.

The spelling of 77172725307 in words is "seventy-seven billion, one hundred seventy-two million, seven hundred twenty-five thousand, three hundred seven".