74245715123423 has 4 divisors (see below), whose sum is σ = 75291429421008. Its totient is φ = 73200000825840.

The previous prime is 74245715123231. The next prime is 74245715123491. The reversal of 74245715123423 is 32432151754247.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74245715123423 - 2⁴⁰ = 73146203495647 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 (74245745123423) 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, 522857148686 + ... + 522857148827.

It is an arithmetic number, because the mean of its divisors is an integer number (18822857355252).

Almost surely, 2^{74245715123423} is an apocalyptic number.

74245715123423 is a deficient number, since it is larger than the sum of its proper divisors (1045714297585).

74245715123423 is a wasteful number, since it uses less digits than its factorization.

74245715123423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045714297584.

The product of its digits is 5644800, while the sum is 50.

The spelling of 74245715123423 in words is "seventy-four trillion, two hundred forty-five billion, seven hundred fifteen million, one hundred twenty-three thousand, four hundred twenty-three".