77571127157312 has 56 divisors (see below), whose sum is σ = 153985300888320. Its totient is φ = 38771683857920.

The previous prime is 77571127157309. The next prime is 77571127157351. The reversal of 77571127157312 is 21375172117577.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3072476273 + ... + 3072501519.

Almost surely, 2^{77571127157312} is an apocalyptic number.

It is an amenable number.

77571127157312 is a deficient number, since it is larger than the sum of its proper divisors (76414173731008).

77571127157312 is a wasteful number, since it uses less digits than its factorization.

77571127157312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40539 (or 40529 counting only the distinct ones).

The product of its digits is 5042100, while the sum is 56.

The spelling of 77571127157312 in words is "seventy-seven trillion, five hundred seventy-one billion, one hundred twenty-seven million, one hundred fifty-seven thousand, three hundred twelve".