74385136543 has 8 divisors (see below), whose sum is σ = 76203000720. Its totient is φ = 72567443520.

The previous prime is 74385136541. The next prime is 74385136547. The reversal of 74385136543 is 34563158347.

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 74385136543 - 2¹ = 74385136541 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 (74385136541) 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, 1572288 + ... + 1618906.

It is an arithmetic number, because the mean of its divisors is an integer number (9525375090).

Almost surely, 2^74385136543 is an apocalyptic number.

74385136543 is a deficient number, since it is larger than the sum of its proper divisors (1817864177).

74385136543 is a wasteful number, since it uses less digits than its factorization.

74385136543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85577.

The product of its digits is 3628800, while the sum is 49.

The spelling of 74385136543 in words is "seventy-four billion, three hundred eighty-five million, one hundred thirty-six thousand, five hundred forty-three".