77154000691144 has 16 divisors (see below), whose sum is σ = 155791732165020. Its totient is φ = 35609538780480.

The previous prime is 77154000691099. The next prime is 77154000691153. The reversal of 77154000691144 is 44119600045177.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65000842536100 + 12153158155044 = 8062310^2 + 3486138^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370932695527 + ... + 370932695734.

Almost surely, 2^{77154000691144} is an apocalyptic number.

It is an amenable number.

77154000691144 is an abundant number, since it is smaller than the sum of its proper divisors (78637731473876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77154000691144 is a wasteful number, since it uses less digits than its factorization.

77154000691144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741865391280 (or 741865391276 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 77154000691144 in words is "seventy-seven trillion, one hundred fifty-four billion, six hundred ninety-one thousand, one hundred forty-four".