77333793172 has 6 divisors (see below), whose sum is σ = 135334138058. Its totient is φ = 38666896584.

The previous prime is 77333793151. The next prime is 77333793223. The reversal of 77333793172 is 27139733377.

It can be written as a sum of positive squares in only one way, i.e., 68218126596 + 9115666576 = 261186^2 + 95476^2 .

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, 9666724143 + ... + 9666724150.

Almost surely, 2^77333793172 is an apocalyptic number.

It is an amenable number.

77333793172 is a deficient number, since it is larger than the sum of its proper divisors (58000344886).

77333793172 is a wasteful number, since it uses less digits than its factorization.

77333793172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19333448297 (or 19333448295 counting only the distinct ones).

The product of its digits is 3500658, while the sum is 52.

The spelling of 77333793172 in words is "seventy-seven billion, three hundred thirty-three million, seven hundred ninety-three thousand, one hundred seventy-two".