74842538497 has 2 divisors, whose sum is σ = 74842538498. Its totient is φ = 74842538496.

The previous prime is 74842538489. The next prime is 74842538501. The reversal of 74842538497 is 79483524847.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74581425216 + 261113281 = 273096^2 + 16159^2 .

It is a cyclic number.

It is not a de Polignac number, because 74842538497 - 2³ = 74842538489 is a prime.

It is not a weakly prime, because it can be changed into another prime (74842538467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37421269248 + 37421269249.

It is an arithmetic number, because the mean of its divisors is an integer number (37421269249).

Almost surely, 2^74842538497 is an apocalyptic number.

It is an amenable number.

74842538497 is a deficient number, since it is larger than the sum of its proper divisors (1).

74842538497 is an equidigital number, since it uses as much as digits as its factorization.

74842538497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54190080, while the sum is 61.

The spelling of 74842538497 in words is "seventy-four billion, eight hundred forty-two million, five hundred thirty-eight thousand, four hundred ninety-seven".