74138158765 has 8 divisors (see below), whose sum is σ = 97053589728. Its totient is φ = 53918660880.

The previous prime is 74138158763. The next prime is 74138158769. The reversal of 74138158765 is 56785183147.

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

It is not a de Polignac number, because 74138158765 - 2¹ = 74138158763 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55), and also a Moran number because the ratio is a prime number: 1347966523 = 74138158765 / (7 + 4 + 1 + 3 + 8 + 1 + 5 + 8 + 7 + 6 + 5).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74138158763) 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, 673983207 + ... + 673983316.

It is an arithmetic number, because the mean of its divisors is an integer number (12131698716).

Almost surely, 2^74138158765 is an apocalyptic number.

It is an amenable number.

74138158765 is a deficient number, since it is larger than the sum of its proper divisors (22915430963).

74138158765 is a wasteful number, since it uses less digits than its factorization.

74138158765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347966539.

The product of its digits is 5644800, while the sum is 55.

It can be divided in two parts, 74138 and 158765, that added together give a triangular number (232903 = T₆₈₂).

The spelling of 74138158765 in words is "seventy-four billion, one hundred thirty-eight million, one hundred fifty-eight thousand, seven hundred sixty-five".