74397187994 has 16 divisors (see below), whose sum is σ = 112534868160. Its totient is φ = 36886805760.

The previous prime is 74397187993. The next prime is 74397188017. The reversal of 74397187994 is 49978179347.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (74397187993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189824 + ... + 429915.

It is an arithmetic number, because the mean of its divisors is an integer number (7033429260).

Almost surely, 2^74397187994 is an apocalyptic number.

74397187994 is a deficient number, since it is larger than the sum of its proper divisors (38137680166).

74397187994 is a wasteful number, since it uses less digits than its factorization.

74397187994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620245.

The product of its digits is 96018048, while the sum is 68.

The spelling of 74397187994 in words is "seventy-four billion, three hundred ninety-seven million, one hundred eighty-seven thousand, nine hundred ninety-four".