97871298919 has 2 divisors, whose sum is σ = 97871298920. Its totient is φ = 97871298918.

The previous prime is 97871298883. The next prime is 97871298949. The reversal of 97871298919 is 91989217879.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97871298919 - 2⁹ = 97871298407 is a prime.

It is a super-2 number, since 2×97871298919² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97871298949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48935649459 + 48935649460.

It is an arithmetic number, because the mean of its divisors is an integer number (48935649460).

Almost surely, 2^97871298919 is an apocalyptic number.

97871298919 is a deficient number, since it is larger than the sum of its proper divisors (1).

97871298919 is an equidigital number, since it uses as much as digits as its factorization.

97871298919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41150592, while the sum is 70.

The spelling of 97871298919 in words is "ninety-seven billion, eight hundred seventy-one million, two hundred ninety-eight thousand, nine hundred nineteen".