123097834491 has 16 divisors (see below), whose sum is σ = 168143099520. Its totient is φ = 80063343360.

The previous prime is 123097834469. The next prime is 123097834499. The reversal of 123097834491 is 194438790321.

It is a happy number.

It is not a de Polignac number, because 123097834491 - 2⁵ = 123097834459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123097834499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444630 + ... + 666251.

It is an arithmetic number, because the mean of its divisors is an integer number (10508943720).

Almost surely, 2^123097834491 is an apocalyptic number.

123097834491 is a deficient number, since it is larger than the sum of its proper divisors (45045265029).

123097834491 is a wasteful number, since it uses less digits than its factorization.

123097834491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111786.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 123097834491 in words is "one hundred twenty-three billion, ninety-seven million, eight hundred thirty-four thousand, four hundred ninety-one".