771713016668 has 48 divisors (see below), whose sum is σ = 1506608087040. Its totient is φ = 342889934400.

The previous prime is 771713016643. The next prime is 771713016733. The reversal of 771713016668 is 866610317177.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (53).

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, 21413 + ... + 1242531.

It is an arithmetic number, because the mean of its divisors is an integer number (31387668480).

Almost surely, 2^771713016668 is an apocalyptic number.

It is an amenable number.

771713016668 is a deficient number, since it is larger than the sum of its proper divisors (734895070372).

771713016668 is a wasteful number, since it uses less digits than its factorization.

771713016668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221458 (or 1221456 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 771713016668 in words is "seven hundred seventy-one billion, seven hundred thirteen million, sixteen thousand, six hundred sixty-eight".