74745644674747 has 2 divisors, whose sum is σ = 74745644674748. Its totient is φ = 74745644674746.

The previous prime is 74745644674741. The next prime is 74745644674807. The reversal of 74745644674747 is 74747644654747.

It is a weak prime.

It is an emirp because it is prime and its reverse (74747644654747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74745644674747 - 2¹⁵ = 74745644641979 is a prime.

It is a super-2 number, since 2×74745644674747² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74745644674741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37372822337373 + 37372822337374.

It is an arithmetic number, because the mean of its divisors is an integer number (37372822337374).

Almost surely, 2^{74745644674747} is an apocalyptic number.

74745644674747 is a deficient number, since it is larger than the sum of its proper divisors (1).

74745644674747 is an equidigital number, since it uses as much as digits as its factorization.

74745644674747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12391464960, while the sum is 76.

The spelling of 74745644674747 in words is "seventy-four trillion, seven hundred forty-five billion, six hundred forty-four million, six hundred seventy-four thousand, seven hundred forty-seven".