74183252621 has 2 divisors, whose sum is σ = 74183252622. Its totient is φ = 74183252620.

The previous prime is 74183252617. The next prime is 74183252629. The reversal of 74183252621 is 12625238147.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73270910596 + 912342025 = 270686^2 + 30205^2 .

It is an emirp because it is prime and its reverse (12625238147) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74183252621 - 2² = 74183252617 is a prime.

It is a super-2 number, since 2×74183252621² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74183252629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37091626310 + 37091626311.

It is an arithmetic number, because the mean of its divisors is an integer number (37091626311).

Almost surely, 2^74183252621 is an apocalyptic number.

It is an amenable number.

74183252621 is a deficient number, since it is larger than the sum of its proper divisors (1).

74183252621 is an equidigital number, since it uses as much as digits as its factorization.

74183252621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 41.

The spelling of 74183252621 in words is "seventy-four billion, one hundred eighty-three million, two hundred fifty-two thousand, six hundred twenty-one".