74191376789 has 4 divisors (see below), whose sum is σ = 76584647040. Its totient is φ = 71798106540.

The previous prime is 74191376767. The next prime is 74191376807. The reversal of 74191376789 is 98767319147.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74191376789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74191396789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1196635079 + ... + 1196635140.

It is an arithmetic number, because the mean of its divisors is an integer number (19146161760).

Almost surely, 2^74191376789 is an apocalyptic number.

It is an amenable number.

74191376789 is a deficient number, since it is larger than the sum of its proper divisors (2393270251).

74191376789 is a wasteful number, since it uses less digits than its factorization.

74191376789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393270250.

The product of its digits is 16003008, while the sum is 62.

The spelling of 74191376789 in words is "seventy-four billion, one hundred ninety-one million, three hundred seventy-six thousand, seven hundred eighty-nine".