74396451999 has 8 divisors (see below), whose sum is σ = 100309823280. Its totient is φ = 49040357696.

The previous prime is 74396451931. The next prime is 74396452001. The reversal of 74396451999 is 99915469347.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74396451999 - 2¹⁵ = 74396419231 is a prime.

It is a super-2 number, since 2×74396451999² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74396451919) 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, 139318932 + ... + 139319465.

It is an arithmetic number, because the mean of its divisors is an integer number (12538727910).

Almost surely, 2^74396451999 is an apocalyptic number.

74396451999 is a deficient number, since it is larger than the sum of its proper divisors (25913371281).

74396451999 is a wasteful number, since it uses less digits than its factorization.

74396451999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278638489.

The product of its digits is 66134880, while the sum is 66.

The spelling of 74396451999 in words is "seventy-four billion, three hundred ninety-six million, four hundred fifty-one thousand, nine hundred ninety-nine".