130623191999 has 4 divisors (see below), whose sum is σ = 130781141064. Its totient is φ = 130465242936.

The previous prime is 130623191987. The next prime is 130623192001. The reversal of 130623191999 is 999191326031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130623191999 - 2³² = 126328224703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130623191999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130623191929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78973292 + ... + 78974945.

It is an arithmetic number, because the mean of its divisors is an integer number (32695285266).

Almost surely, 2^130623191999 is an apocalyptic number.

130623191999 is a deficient number, since it is larger than the sum of its proper divisors (157949065).

130623191999 is an equidigital number, since it uses as much as digits as its factorization.

130623191999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157949064.

The product of its (nonzero) digits is 708588, while the sum is 53.

The spelling of 130623191999 in words is "one hundred thirty billion, six hundred twenty-three million, one hundred ninety-one thousand, nine hundred ninety-nine".