11990590423 has 12 divisors (see below), whose sum is σ = 13982364480. Its totient is φ = 10252503072.

The previous prime is 11990590387. The next prime is 11990590427. The reversal of 11990590423 is 32409509911.

It is not a de Polignac number, because 11990590423 - 2⁹ = 11990589911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11990590423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11990590427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 279111 + ... + 319192.

It is an arithmetic number, because the mean of its divisors is an integer number (1165197040).

Almost surely, 2^11990590423 is an apocalyptic number.

11990590423 is a deficient number, since it is larger than the sum of its proper divisors (1991774057).

11990590423 is an equidigital number, since it uses as much as digits as its factorization.

11990590423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598726 (or 598719 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 43.

The spelling of 11990590423 in words is "eleven billion, nine hundred ninety million, five hundred ninety thousand, four hundred twenty-three".