77172034749 has 16 divisors (see below), whose sum is σ = 103521255552. Its totient is φ = 51135939008.

The previous prime is 77172034727. The next prime is 77172034781. The reversal of 77172034749 is 94743027177.

It is a cyclic number.

It is not a de Polignac number, because 77172034749 - 2⁵ = 77172034717 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77172034799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534232 + ... + 663134.

It is an arithmetic number, because the mean of its divisors is an integer number (6470078472).

Almost surely, 2^77172034749 is an apocalyptic number.

It is an amenable number.

77172034749 is a deficient number, since it is larger than the sum of its proper divisors (26349220803).

77172034749 is a wasteful number, since it uses less digits than its factorization.

77172034749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130116.

The product of its (nonzero) digits is 2074464, while the sum is 51.

The spelling of 77172034749 in words is "seventy-seven billion, one hundred seventy-two million, thirty-four thousand, seven hundred forty-nine".