77172034748 has 6 divisors (see below), whose sum is σ = 135051060816. Its totient is φ = 38586017372.

The previous prime is 77172034727. The next prime is 77172034781. The reversal of 77172034748 is 84743027177.

It is a junction number, because it is equal to n+sod(n) for n = 77172034696 and 77172034705.

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, 9646504340 + ... + 9646504347.

It is an arithmetic number, because the mean of its divisors is an integer number (22508510136).

Almost surely, 2^77172034748 is an apocalyptic number.

It is an amenable number.

77172034748 is a deficient number, since it is larger than the sum of its proper divisors (57879026068).

77172034748 is a wasteful number, since it uses less digits than its factorization.

77172034748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19293008691 (or 19293008689 counting only the distinct ones).

The product of its (nonzero) digits is 1843968, while the sum is 50.

The spelling of 77172034748 in words is "seventy-seven billion, one hundred seventy-two million, thirty-four thousand, seven hundred forty-eight".