77738771327456 has 12 divisors (see below), whose sum is σ = 153048206050992. Its totient is φ = 38869385663712.

The previous prime is 77738771327449. The next prime is 77738771327471. The reversal of 77738771327456 is 65472317783777.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1214668301960 + ... + 1214668302023.

It is an arithmetic number, because the mean of its divisors is an integer number (12754017170916).

Almost surely, 2^{77738771327456} is an apocalyptic number.

It is an amenable number.

77738771327456 is a deficient number, since it is larger than the sum of its proper divisors (75309434723536).

77738771327456 is a wasteful number, since it uses less digits than its factorization.

77738771327456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429336603993 (or 2429336603985 counting only the distinct ones).

The product of its digits is 2032974720, while the sum is 74.

The spelling of 77738771327456 in words is "seventy-seven trillion, seven hundred thirty-eight billion, seven hundred seventy-one million, three hundred twenty-seven thousand, four hundred fifty-six".