77757323137485 has 64 divisors (see below), whose sum is σ = 125230466949120. Its totient is φ = 41198439744000.

The previous prime is 77757323137477. The next prime is 77757323137517. The reversal of 77757323137485 is 58473132375777.

It is not a de Polignac number, because 77757323137485 - 2³ = 77757323137477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4790659320 + ... + 4790675550.

It is an arithmetic number, because the mean of its divisors is an integer number (1956726046080).

Almost surely, 2^{77757323137485} is an apocalyptic number.

It is an amenable number.

77757323137485 is a deficient number, since it is larger than the sum of its proper divisors (47473143811635).

77757323137485 is a wasteful number, since it uses less digits than its factorization.

77757323137485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19130.

The product of its digits is 726062400, while the sum is 69.

The spelling of 77757323137485 in words is "seventy-seven trillion, seven hundred fifty-seven billion, three hundred twenty-three million, one hundred thirty-seven thousand, four hundred eighty-five".