74216562197 has 2 divisors, whose sum is σ = 74216562198. Its totient is φ = 74216562196.

The previous prime is 74216562097. The next prime is 74216562223. The reversal of 74216562197 is 79126561247.

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., 58257545956 + 15959016241 = 241366^2 + 126329^2 .

It is an emirp because it is prime and its reverse (79126561247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74216562197 - 2²⁸ = 73948126741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74216562097) 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, 37108281098 + 37108281099.

It is an arithmetic number, because the mean of its divisors is an integer number (37108281099).

Almost surely, 2^74216562197 is an apocalyptic number.

It is an amenable number.

74216562197 is a deficient number, since it is larger than the sum of its proper divisors (1).

74216562197 is an equidigital number, since it uses as much as digits as its factorization.

74216562197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 50.

The spelling of 74216562197 in words is "seventy-four billion, two hundred sixteen million, five hundred sixty-two thousand, one hundred ninety-seven".