74640677399 has 4 divisors (see below), whose sum is σ = 74643951120. Its totient is φ = 74637403680.

The previous prime is 74640677383. The next prime is 74640677453. The reversal of 74640677399 is 99377604647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99377604647 = 24137 ⋅4117231.

It is a cyclic number.

It is not a de Polignac number, because 74640677399 - 2⁴ = 74640677383 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 (74640677329) 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, 1602419 + ... + 1648340.

It is an arithmetic number, because the mean of its divisors is an integer number (18660987780).

Almost surely, 2^74640677399 is an apocalyptic number.

74640677399 is a deficient number, since it is larger than the sum of its proper divisors (3273721).

74640677399 is a wasteful number, since it uses less digits than its factorization.

74640677399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273720.

The product of its (nonzero) digits is 48009024, while the sum is 62.

The spelling of 74640677399 in words is "seventy-four billion, six hundred forty million, six hundred seventy-seven thousand, three hundred ninety-nine".