23185197681 has 8 divisors (see below), whose sum is σ = 30943014624. Its totient is φ = 15442089600.

The previous prime is 23185197667. The next prime is 23185197701. The reversal of 23185197681 is 18679158132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23185197681 - 2¹⁸ = 23184935537 is a prime.

It is a super-2 number, since 2×23185197681² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23185197611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3673536 + ... + 3679841.

It is an arithmetic number, because the mean of its divisors is an integer number (3867876828).

Almost surely, 2^23185197681 is an apocalyptic number.

It is an amenable number.

23185197681 is a deficient number, since it is larger than the sum of its proper divisors (7757816943).

23185197681 is a wasteful number, since it uses less digits than its factorization.

23185197681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7354431.

The product of its digits is 725760, while the sum is 51.

The spelling of 23185197681 in words is "twenty-three billion, one hundred eighty-five million, one hundred ninety-seven thousand, six hundred eighty-one".