77461757771745 has 32 divisors (see below), whose sum is σ = 129369406804992. Its totient is φ = 39503904642752.

The previous prime is 77461757771719. The next prime is 77461757771753. The reversal of 77461757771745 is 54717775716477.

It is not a de Polignac number, because 77461757771745 - 2¹² = 77461757767649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35350059 + ... + 37477328.

It is an arithmetic number, because the mean of its divisors is an integer number (4042793962656).

Almost surely, 2^{77461757771745} is an apocalyptic number.

It is an amenable number.

77461757771745 is a deficient number, since it is larger than the sum of its proper divisors (51907649033247).

77461757771745 is a wasteful number, since it uses less digits than its factorization.

77461757771745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72830501.

The product of its digits is 1976503200, while the sum is 75.

The spelling of 77461757771745 in words is "seventy-seven trillion, four hundred sixty-one billion, seven hundred fifty-seven million, seven hundred seventy-one thousand, seven hundred forty-five".