74982454696081 has 27 divisors (see below), whose sum is σ = 77512440555963. Its totient is φ = 72533959051680.

The previous prime is 74982454696049. The next prime is 74982454696157. The reversal of 74982454696081 is 18069645428947.

The square root of 74982454696081 is 8659241.

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

It can be written as a sum of positive squares in only one way, i.e., 3613074854481 + 71369379841600 = 1900809^2 + 8448040^2 .

It is not a de Polignac number, because 74982454696081 - 2⁵ = 74982454696049 is a prime.

It is a super-3 number, since 3×74982454696081³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74982454695995 and 74982454696013.

It is not an unprimeable number, because it can be changed into a prime (74985454696081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 45088667056 + ... + 45088668718.

Almost surely, 2^{74982454696081} is an apocalyptic number.

74982454696081 is the 8659241-st square number.

74982454696081 is the 4329621-st centered octagonal number.

It is an amenable number.

74982454696081 is a deficient number, since it is larger than the sum of its proper divisors (2529985859882).

74982454696081 is an frugal number, since it uses more digits than its factorization.

74982454696081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3662 (or 1831 counting only the distinct ones).

The product of its (nonzero) digits is 836075520, while the sum is 73.

The spelling of 74982454696081 in words is "seventy-four trillion, nine hundred eighty-two billion, four hundred fifty-four million, six hundred ninety-six thousand, eighty-one".