77997594914 has 8 divisors (see below), whose sum is σ = 117000981660. Its totient is φ = 38997267696.

The previous prime is 77997594911. The next prime is 77997594971. The reversal of 77997594914 is 41949579977.

It can be written as a sum of positive squares in 2 ways, for example, as 75753204289 + 2244390625 = 275233^2 + 47375^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (77997594911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700049 + ... + 803780.

Almost surely, 2^77997594914 is an apocalyptic number.

77997594914 is a deficient number, since it is larger than the sum of its proper divisors (39003386746).

77997594914 is a wasteful number, since it uses less digits than its factorization.

77997594914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529764.

The product of its digits is 180033840, while the sum is 71.

The spelling of 77997594914 in words is "seventy-seven billion, nine hundred ninety-seven million, five hundred ninety-four thousand, nine hundred fourteen".