74145339815759 has 4 divisors (see below), whose sum is σ = 74232262841016. Its totient is φ = 74058416790504.

The previous prime is 74145339815711. The next prime is 74145339815801. The reversal of 74145339815759 is 95751893354147.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74145339815759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74145339815692 and 74145339815701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74145339814759) 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, 43461511349 + ... + 43461513054.

It is an arithmetic number, because the mean of its divisors is an integer number (18558065710254).

Almost surely, 2^{74145339815759} is an apocalyptic number.

74145339815759 is a deficient number, since it is larger than the sum of its proper divisors (86923025257).

74145339815759 is an equidigital number, since it uses as much as digits as its factorization.

74145339815759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86923025256.

The product of its digits is 571536000, while the sum is 71.

The spelling of 74145339815759 in words is "seventy-four trillion, one hundred forty-five billion, three hundred thirty-nine million, eight hundred fifteen thousand, seven hundred fifty-nine".