77403714644 has 12 divisors (see below), whose sum is σ = 137364339168. Its totient is φ = 38156760600.

The previous prime is 77403714607. The next prime is 77403714671. The reversal of 77403714644 is 44641730477.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136273862 + ... + 136274429.

It is an arithmetic number, because the mean of its divisors is an integer number (11447028264).

Almost surely, 2^77403714644 is an apocalyptic number.

It is an amenable number.

77403714644 is a deficient number, since it is larger than the sum of its proper divisors (59960624524).

77403714644 is a wasteful number, since it uses less digits than its factorization.

77403714644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272548366 (or 272548364 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 47.

The spelling of 77403714644 in words is "seventy-seven billion, four hundred three million, seven hundred fourteen thousand, six hundred forty-four".