74635613149 has 4 divisors (see below), whose sum is σ = 75686819040. Its totient is φ = 73584407260.

The previous prime is 74635613131. The next prime is 74635613161. The reversal of 74635613149 is 94131653647.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94131653647 = 83 ⋅1134116309.

It is a cyclic number.

It is not a de Polignac number, because 74635613149 - 2¹¹ = 74635611101 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 (74635613849) 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, 525602839 + ... + 525602980.

It is an arithmetic number, because the mean of its divisors is an integer number (18921704760).

Almost surely, 2^74635613149 is an apocalyptic number.

It is an amenable number.

74635613149 is a deficient number, since it is larger than the sum of its proper divisors (1051205891).

74635613149 is a wasteful number, since it uses less digits than its factorization.

74635613149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051205890.

The product of its digits is 1632960, while the sum is 49.

The spelling of 74635613149 in words is "seventy-four billion, six hundred thirty-five million, six hundred thirteen thousand, one hundred forty-nine".