74112021149 has 2 divisors, whose sum is σ = 74112021150. Its totient is φ = 74112021148.

The previous prime is 74112021143. The next prime is 74112021259. The reversal of 74112021149 is 94112021147.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58566420025 + 15545601124 = 242005^2 + 124682^2 .

It is a cyclic number.

It is not a de Polignac number, because 74112021149 - 2⁴ = 74112021133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74112021143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37056010574 + 37056010575.

It is an arithmetic number, because the mean of its divisors is an integer number (37056010575).

Almost surely, 2^74112021149 is an apocalyptic number.

It is an amenable number.

74112021149 is a deficient number, since it is larger than the sum of its proper divisors (1).

74112021149 is an equidigital number, since it uses as much as digits as its factorization.

74112021149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 32.

The spelling of 74112021149 in words is "seventy-four billion, one hundred twelve million, twenty-one thousand, one hundred forty-nine".