97797372919 has 2 divisors, whose sum is σ = 97797372920. Its totient is φ = 97797372918.

The previous prime is 97797372889. The next prime is 97797372941. The reversal of 97797372919 is 91927379779.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97797372919 - 2¹¹ = 97797370871 is a prime.

It is a super-2 number, since 2×97797372919² (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 (97797372949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48898686459 + 48898686460.

It is an arithmetic number, because the mean of its divisors is an integer number (48898686460).

Almost surely, 2^97797372919 is an apocalyptic number.

97797372919 is a deficient number, since it is larger than the sum of its proper divisors (1).

97797372919 is an equidigital number, since it uses as much as digits as its factorization.

97797372919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94517766, while the sum is 70.

The spelling of 97797372919 in words is "ninety-seven billion, seven hundred ninety-seven million, three hundred seventy-two thousand, nine hundred nineteen".