74554615709 has 4 divisors (see below), whose sum is σ = 85205275104. Its totient is φ = 63903956316.

The previous prime is 74554615703. The next prime is 74554615711. The reversal of 74554615709 is 90751645547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74554615709 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 (74554615703) 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, 5325329687 + ... + 5325329700.

It is an arithmetic number, because the mean of its divisors is an integer number (21301318776).

Almost surely, 2^74554615709 is an apocalyptic number.

It is an amenable number.

74554615709 is a deficient number, since it is larger than the sum of its proper divisors (10650659395).

74554615709 is a wasteful number, since it uses less digits than its factorization.

74554615709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10650659394.

The product of its (nonzero) digits is 5292000, while the sum is 53.

The spelling of 74554615709 in words is "seventy-four billion, five hundred fifty-four million, six hundred fifteen thousand, seven hundred nine".