74745644654747 has 16 divisors (see below), whose sum is σ = 82584645050880. Its totient is φ = 67080879996000.

The previous prime is 74745644654719. The next prime is 74745644654783.

74745644654747 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 74745644654747 - 2²⁸ = 74745376219291 is a prime.

It is a super-2 number, since 2×74745644654747² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74745644674747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38129 + ... + 12226722.

It is an arithmetic number, because the mean of its divisors is an integer number (5161540315680).

Almost surely, 2^{74745644654747} is an apocalyptic number.

74745644654747 is a deficient number, since it is larger than the sum of its proper divisors (7839000396133).

74745644654747 is a wasteful number, since it uses less digits than its factorization.

74745644654747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12271954.

The product of its digits is 8851046400, while the sum is 74.

The spelling of 74745644654747 in words is "seventy-four trillion, seven hundred forty-five billion, six hundred forty-four million, six hundred fifty-four thousand, seven hundred forty-seven".