74452168473489 has 27 divisors (see below), whose sum is σ = 108506405558577. Its totient is φ = 49193600351616.

The previous prime is 74452168473457. The next prime is 74452168473499. The reversal of 74452168473489 is 98437486125447.

It is a happy number.

The square root of 74452168473489 is 8628567.

It is a perfect power (a square), and thus also a powerful number.

74452168473489 is a `hidden beast` number, since 7 + 4 + 4 + 52 + 1 + 68 + 473 + 48 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 28357573983489 + 46094594490000 = 5325183^2 + 6789300^2 .

It is not a de Polignac number, because 74452168473489 - 2⁵ = 74452168473457 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74452168473499) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2925071487 + ... + 2925096939.

Almost surely, 2^{74452168473489} is an apocalyptic number.

74452168473489 is the 8628567-th square number.

74452168473489 is the 4314284-th centered octagonal number.

It is an amenable number.

74452168473489 is a deficient number, since it is larger than the sum of its proper divisors (34054237085088).

74452168473489 is an frugal number, since it uses more digits than its factorization.

74452168473489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51138 (or 25569 counting only the distinct ones).

The product of its digits is 1300561920, while the sum is 72.

The spelling of 74452168473489 in words is "seventy-four trillion, four hundred fifty-two billion, one hundred sixty-eight million, four hundred seventy-three thousand, four hundred eighty-nine".