191590000023 has 16 divisors (see below), whose sum is σ = 267622016256. Its totient is φ = 121686576000.

The previous prime is 191589999911. The next prime is 191590000039. The reversal of 191590000023 is 320000095191.

It is not a de Polignac number, because 191590000023 - 2²⁰ = 191588951447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191590008023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5513890 + ... + 5548527.

It is an arithmetic number, because the mean of its divisors is an integer number (16726376016).

Almost surely, 2^191590000023 is an apocalyptic number.

191590000023 is a deficient number, since it is larger than the sum of its proper divisors (76032016233).

191590000023 is a wasteful number, since it uses less digits than its factorization.

191590000023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11062694.

The product of its (nonzero) digits is 2430, while the sum is 30.

The spelling of 191590000023 in words is "one hundred ninety-one billion, five hundred ninety million, twenty-three", and thus it is an aban number.