74151731393 has 4 divisors (see below), whose sum is σ = 75196122048. Its totient is φ = 73107340740.

The previous prime is 74151731387. The next prime is 74151731431. The reversal of 74151731393 is 39313715147.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74151731393 - 2³⁴ = 56971862209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74151733393) 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, 522195221 + ... + 522195362.

It is an arithmetic number, because the mean of its divisors is an integer number (18799030512).

Almost surely, 2^74151731393 is an apocalyptic number.

It is an amenable number.

74151731393 is a deficient number, since it is larger than the sum of its proper divisors (1044390655).

74151731393 is a wasteful number, since it uses less digits than its factorization.

74151731393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044390654.

The product of its digits is 238140, while the sum is 44.

The spelling of 74151731393 in words is "seventy-four billion, one hundred fifty-one million, seven hundred thirty-one thousand, three hundred ninety-three".