74406743437 has 8 divisors (see below), whose sum is σ = 84843888696. Its totient is φ = 64642962432.

The previous prime is 74406743387. The next prime is 74406743441. The reversal of 74406743437 is 73434760447.

It can be written as a sum of positive squares in 4 ways, for example, as 13444170601 + 60962572836 = 115949^2 + 246906^2 .

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 74406743437 - 2⁷ = 74406743309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74406743137) 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, 168340828 + ... + 168341269.

It is an arithmetic number, because the mean of its divisors is an integer number (10605486087).

Almost surely, 2^74406743437 is an apocalyptic number.

It is an amenable number.

74406743437 is a deficient number, since it is larger than the sum of its proper divisors (10437145259).

74406743437 is a wasteful number, since it uses less digits than its factorization.

74406743437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336682127.

The product of its (nonzero) digits is 4741632, while the sum is 49.

The spelling of 74406743437 in words is "seventy-four billion, four hundred six million, seven hundred forty-three thousand, four hundred thirty-seven".