74696249509 has 4 divisors (see below), whose sum is σ = 85367142304. Its totient is φ = 64025356716.

The previous prime is 74696249503. The next prime is 74696249521. The reversal of 74696249509 is 90594269647.

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 not a de Polignac number, because 74696249509 - 2²³ = 74687860901 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 (74696249503) 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, 5335446387 + ... + 5335446400.

It is an arithmetic number, because the mean of its divisors is an integer number (21341785576).

Almost surely, 2^74696249509 is an apocalyptic number.

It is an amenable number.

74696249509 is a deficient number, since it is larger than the sum of its proper divisors (10670892795).

74696249509 is a wasteful number, since it uses less digits than its factorization.

74696249509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10670892794.

The product of its (nonzero) digits is 29393280, while the sum is 61.

The spelling of 74696249509 in words is "seventy-four billion, six hundred ninety-six million, two hundred forty-nine thousand, five hundred nine".