74143257831 has 48 divisors (see below), whose sum is σ = 108777539520. Its totient is φ = 48660756480.

The previous prime is 74143257803. The next prime is 74143257841. The reversal of 74143257831 is 13875234147.

74143257831 is a `hidden beast` number, since 7 + 4 + 1 + 43 + 2 + 578 + 31 = 666.

It is not a de Polignac number, because 74143257831 - 2⁷ = 74143257703 is a prime.

It is a super-2 number, since 2×74143257831² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74143257841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 117500886 + ... + 117501516.

It is an arithmetic number, because the mean of its divisors is an integer number (2266198740).

Almost surely, 2^74143257831 is an apocalyptic number.

74143257831 is a deficient number, since it is larger than the sum of its proper divisors (34634281689).

74143257831 is a wasteful number, since it uses less digits than its factorization.

74143257831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416 (or 1413 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The spelling of 74143257831 in words is "seventy-four billion, one hundred forty-three million, two hundred fifty-seven thousand, eight hundred thirty-one".