74745644654748 has 24 divisors (see below), whose sum is σ = 176795634390928. Its totient is φ = 24573910571136.

The previous prime is 74745644654719. The next prime is 74745644654783. The reversal of 74745644654748 is 84745644654747.

It is a super-2 number, since 2×74745644654748² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74745644654748.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42663038311 + ... + 42663040062.

Almost surely, 2^{74745644654748} is an apocalyptic number.

It is an amenable number.

74745644654748 is an abundant number, since it is smaller than the sum of its proper divisors (102049989736180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74745644654748 is a wasteful number, since it uses less digits than its factorization.

74745644654748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85326078453 (or 85326078451 counting only the distinct ones).

The product of its digits is 10115481600, while the sum is 75.

Subtracting 74745644654748 from its reverse (84745644654747), we obtain a palindrome (9999999999999).

The spelling of 74745644654748 in words is "seventy-four trillion, seven hundred forty-five billion, six hundred forty-four million, six hundred fifty-four thousand, seven hundred forty-eight".