74451155231 has 2 divisors, whose sum is σ = 74451155232. Its totient is φ = 74451155230.

The previous prime is 74451155213. The next prime is 74451155237. The reversal of 74451155231 is 13255115447.

Together with previous prime (74451155213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74451155231 is a prime.

It is a super-2 number, since 2×74451155231² (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 (74451155237) 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 as a sum of consecutive naturals, namely, 37225577615 + 37225577616.

It is an arithmetic number, because the mean of its divisors is an integer number (37225577616).

Almost surely, 2^74451155231 is an apocalyptic number.

74451155231 is a deficient number, since it is larger than the sum of its proper divisors (1).

74451155231 is an equidigital number, since it uses as much as digits as its factorization.

74451155231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 38.

The spelling of 74451155231 in words is "seventy-four billion, four hundred fifty-one million, one hundred fifty-five thousand, two hundred thirty-one".