74595638213 has 2 divisors, whose sum is σ = 74595638214. Its totient is φ = 74595638212.

The previous prime is 74595638119. The next prime is 74595638239. The reversal of 74595638213 is 31283659547.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47018718244 + 27576919969 = 216838^2 + 166063^2 .

It is a cyclic number.

It is not a de Polignac number, because 74595638213 - 2¹² = 74595634117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74595638263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37297819106 + 37297819107.

It is an arithmetic number, because the mean of its divisors is an integer number (37297819107).

Almost surely, 2^74595638213 is an apocalyptic number.

It is an amenable number.

74595638213 is a deficient number, since it is larger than the sum of its proper divisors (1).

74595638213 is an equidigital number, since it uses as much as digits as its factorization.

74595638213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 53.

The spelling of 74595638213 in words is "seventy-four billion, five hundred ninety-five million, six hundred thirty-eight thousand, two hundred thirteen".