74603430646 has 4 divisors (see below), whose sum is σ = 111905145972. Its totient is φ = 37301715322.

The previous prime is 74603430623. The next prime is 74603430661. The reversal of 74603430646 is 64603430647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64603430647 = 7 ⋅9229061521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18650857660 + ... + 18650857663.

It is an arithmetic number, because the mean of its divisors is an integer number (27976286493).

Almost surely, 2^74603430646 is an apocalyptic number.

74603430646 is a deficient number, since it is larger than the sum of its proper divisors (37301715326).

74603430646 is a wasteful number, since it uses less digits than its factorization.

74603430646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37301715325.

The product of its (nonzero) digits is 870912, while the sum is 43.

Subtracting from 74603430646 its reverse (64603430647), we obtain a palindrome (9999999999).

The spelling of 74603430646 in words is "seventy-four billion, six hundred three million, four hundred thirty thousand, six hundred forty-six".