97249177819 has 2 divisors, whose sum is σ = 97249177820. Its totient is φ = 97249177818.

The previous prime is 97249177777. The next prime is 97249177891. The reversal of 97249177819 is 91877194279.

Together with next prime (97249177891) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97249177819 - 2¹⁵ = 97249145051 is a prime.

It is a super-2 number, since 2×97249177819² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97249177919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48624588909 + 48624588910.

It is an arithmetic number, because the mean of its divisors is an integer number (48624588910).

Almost surely, 2^97249177819 is an apocalyptic number.

97249177819 is a deficient number, since it is larger than the sum of its proper divisors (1).

97249177819 is an equidigital number, since it uses as much as digits as its factorization.

97249177819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16003008, while the sum is 64.

The spelling of 97249177819 in words is "ninety-seven billion, two hundred forty-nine million, one hundred seventy-seven thousand, eight hundred nineteen".