74495697325921 has 9 divisors (see below), whose sum is σ = 76268825096529. Its totient is φ = 72762876742836.

The previous prime is 74495697325891. The next prime is 74495697325991. The reversal of 74495697325921 is 12952379659447.

The square root of 74495697325921 is 8631089.

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

It is not a de Polignac number, because 74495697325921 - 2¹⁹ = 74495696801633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74495697325991) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 371036466 + ... + 371237188.

Almost surely, 2^{74495697325921} is an apocalyptic number.

74495697325921 is the 8631089-th square number.

74495697325921 is the 4315545-th centered octagonal number.

It is an amenable number.

74495697325921 is a deficient number, since it is larger than the sum of its proper divisors (1773127770608).

74495697325921 is an frugal number, since it uses more digits than its factorization.

74495697325921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401532 (or 200766 counting only the distinct ones).

The product of its digits is 1028764800, while the sum is 73.

The spelling of 74495697325921 in words is "seventy-four trillion, four hundred ninety-five billion, six hundred ninety-seven million, three hundred twenty-five thousand, nine hundred twenty-one".