74688209360139 has 32 divisors (see below), whose sum is σ = 100825158551040. Its totient is φ = 49176437236992.

The previous prime is 74688209360137. The next prime is 74688209360147. The reversal of 74688209360139 is 93106390288647.

It is not a de Polignac number, because 74688209360139 - 2¹ = 74688209360137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74688209360139.

It is not an unprimeable number, because it can be changed into a prime (74688209360137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51190927 + ... + 52629719.

It is an arithmetic number, because the mean of its divisors is an integer number (3150786204720).

Almost surely, 2^{74688209360139} is an apocalyptic number.

74688209360139 is a deficient number, since it is larger than the sum of its proper divisors (26136949190901).

74688209360139 is a wasteful number, since it uses less digits than its factorization.

74688209360139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439619.

The product of its (nonzero) digits is 94058496, while the sum is 66.

The spelling of 74688209360139 in words is "seventy-four trillion, six hundred eighty-eight billion, two hundred nine million, three hundred sixty thousand, one hundred thirty-nine".