74436885631 has 8 divisors (see below), whose sum is σ = 76124594304. Its totient is φ = 72766139160.

The previous prime is 74436885587. The next prime is 74436885641. The reversal of 74436885631 is 13658863447.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74436885631 is a prime.

It is a super-2 number, since 2×74436885631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74436885641) 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, 4231675 + ... + 4249228.

It is an arithmetic number, because the mean of its divisors is an integer number (9515574288).

Almost surely, 2^74436885631 is an apocalyptic number.

74436885631 is a deficient number, since it is larger than the sum of its proper divisors (1687708673).

74436885631 is a wasteful number, since it uses less digits than its factorization.

74436885631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8481101.

The product of its digits is 11612160, while the sum is 55.

The spelling of 74436885631 in words is "seventy-four billion, four hundred thirty-six million, eight hundred eighty-five thousand, six hundred thirty-one".