74642024646 has 24 divisors (see below), whose sum is σ = 184827870864. Its totient is φ = 21326292720.

The previous prime is 74642024641. The next prime is 74642024659. The reversal of 74642024646 is 64642024647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74642024641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 296198385 + ... + 296198636.

It is an arithmetic number, because the mean of its divisors is an integer number (7701161286).

Almost surely, 2^74642024646 is an apocalyptic number.

74642024646 is an abundant number, since it is smaller than the sum of its proper divisors (110185846218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74642024646 is a wasteful number, since it uses less digits than its factorization.

74642024646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592397036 (or 592397033 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 45.

Subtracting from 74642024646 its reverse (64642024647), we obtain a palindrome (9999999999).

The spelling of 74642024646 in words is "seventy-four billion, six hundred forty-two million, twenty-four thousand, six hundred forty-six".