74245666654247 has 32 divisors (see below), whose sum is σ = 86758589030400. Its totient is φ = 62819714786400.

The previous prime is 74245666654231. The next prime is 74245666654273.

74245666654247 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 74245666654247 - 2⁴ = 74245666654231 is a prime.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74245666654297) 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, 17401472 + ... + 21243882.

It is an arithmetic number, because the mean of its divisors is an integer number (2711205907200).

Almost surely, 2^{74245666654247} is an apocalyptic number.

74245666654247 is a deficient number, since it is larger than the sum of its proper divisors (12512922376153).

74245666654247 is a wasteful number, since it uses less digits than its factorization.

74245666654247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3844067.

The product of its digits is 1625702400, while the sum is 68.

The spelling of 74245666654247 in words is "seventy-four trillion, two hundred forty-five billion, six hundred sixty-six million, six hundred fifty-four thousand, two hundred forty-seven".