77771414748 has 48 divisors (see below), whose sum is σ = 184645359360. Its totient is φ = 25470192384.

The previous prime is 77771414731. The next prime is 77771414771. The reversal of 77771414748 is 84741417777.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1277940 + ... + 1337412.

It is an arithmetic number, because the mean of its divisors is an integer number (3846778320).

Almost surely, 2^77771414748 is an apocalyptic number.

It is an amenable number.

77771414748 is an abundant number, since it is smaller than the sum of its proper divisors (106873944612).

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

77771414748 is a wasteful number, since it uses less digits than its factorization.

77771414748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61386 (or 61384 counting only the distinct ones).

The product of its digits is 8605184, while the sum is 57.

The spelling of 77771414748 in words is "seventy-seven billion, seven hundred seventy-one million, four hundred fourteen thousand, seven hundred forty-eight".