74087979757 has 4 divisors (see below), whose sum is σ = 80823250656. Its totient is φ = 67352708860.

The previous prime is 74087979751. The next prime is 74087979773. The reversal of 74087979757 is 75797978047.

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-74087979757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74087979751) 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, 3367635433 + ... + 3367635454.

It is an arithmetic number, because the mean of its divisors is an integer number (20205812664).

Almost surely, 2^74087979757 is an apocalyptic number.

It is an amenable number.

74087979757 is a deficient number, since it is larger than the sum of its proper divisors (6735270899).

74087979757 is a wasteful number, since it uses less digits than its factorization.

74087979757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6735270898.

The product of its (nonzero) digits is 217818720, while the sum is 70.

The spelling of 74087979757 in words is "seventy-four billion, eighty-seven million, nine hundred seventy-nine thousand, seven hundred fifty-seven".