74886071709 has 4 divisors (see below), whose sum is σ = 99848095616. Its totient is φ = 49924047804.

The previous prime is 74886071639. The next prime is 74886071759. The reversal of 74886071709 is 90717068847.

It is a happy number.

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 not a de Polignac number, because 74886071709 - 2²⁹ = 74349200797 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 (74886071759) 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, 12481011949 + ... + 12481011954.

It is an arithmetic number, because the mean of its divisors is an integer number (24962023904).

Almost surely, 2^74886071709 is an apocalyptic number.

It is an amenable number.

74886071709 is a deficient number, since it is larger than the sum of its proper divisors (24962023907).

74886071709 is a wasteful number, since it uses less digits than its factorization.

74886071709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24962023906.

The product of its (nonzero) digits is 4741632, while the sum is 57.

The spelling of 74886071709 in words is "seventy-four billion, eight hundred eighty-six million, seventy-one thousand, seven hundred nine".