74215555097 has 2 divisors, whose sum is σ = 74215555098. Its totient is φ = 74215555096.

The previous prime is 74215555087. The next prime is 74215555199. The reversal of 74215555097 is 79055551247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72286237321 + 1929317776 = 268861^2 + 43924^2 .

It is a cyclic number.

It is not a de Polignac number, because 74215555097 - 2¹⁸ = 74215292953 is a prime.

It is not a weakly prime, because it can be changed into another prime (74215555067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37107777548 + 37107777549.

It is an arithmetic number, because the mean of its divisors is an integer number (37107777549).

Almost surely, 2^74215555097 is an apocalyptic number.

It is an amenable number.

74215555097 is a deficient number, since it is larger than the sum of its proper divisors (1).

74215555097 is an equidigital number, since it uses as much as digits as its factorization.

74215555097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2205000, while the sum is 50.

The spelling of 74215555097 in words is "seventy-four billion, two hundred fifteen million, five hundred fifty-five thousand, ninety-seven".