97188251947 has 2 divisors, whose sum is σ = 97188251948. Its totient is φ = 97188251946.

The previous prime is 97188251921. The next prime is 97188251977. The reversal of 97188251947 is 74915288179.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97188251947 - 2²⁷ = 97054034219 is a prime.

It is not a weakly prime, because it can be changed into another prime (97188251977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48594125973 + 48594125974.

It is an arithmetic number, because the mean of its divisors is an integer number (48594125974).

Almost surely, 2^97188251947 is an apocalyptic number.

97188251947 is a deficient number, since it is larger than the sum of its proper divisors (1).

97188251947 is an equidigital number, since it uses as much as digits as its factorization.

97188251947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 61.

The spelling of 97188251947 in words is "ninety-seven billion, one hundred eighty-eight million, two hundred fifty-one thousand, nine hundred forty-seven".