97149743791 has 2 divisors, whose sum is σ = 97149743792. Its totient is φ = 97149743790.

The previous prime is 97149743783. The next prime is 97149743797. The reversal of 97149743791 is 19734794179.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97149743791 - 2³ = 97149743783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97149743797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48574871895 + 48574871896.

It is an arithmetic number, because the mean of its divisors is an integer number (48574871896).

Almost surely, 2^97149743791 is an apocalyptic number.

97149743791 is a deficient number, since it is larger than the sum of its proper divisors (1).

97149743791 is an equidigital number, since it uses as much as digits as its factorization.

97149743791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12002256, while the sum is 61.

The spelling of 97149743791 in words is "ninety-seven billion, one hundred forty-nine million, seven hundred forty-three thousand, seven hundred ninety-one".