15345299923 has 2 divisors, whose sum is σ = 15345299924. Its totient is φ = 15345299922.

The previous prime is 15345299881. The next prime is 15345299927. The reversal of 15345299923 is 32999254351.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15345299923 - 2²⁹ = 14808429011 is a prime.

It is not a weakly prime, because it can be changed into another prime (15345299927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7672649961 + 7672649962.

It is an arithmetic number, because the mean of its divisors is an integer number (7672649962).

Almost surely, 2^15345299923 is an apocalyptic number.

15345299923 is a deficient number, since it is larger than the sum of its proper divisors (1).

15345299923 is an equidigital number, since it uses as much as digits as its factorization.

15345299923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2624400, while the sum is 52.

The spelling of 15345299923 in words is "fifteen billion, three hundred forty-five million, two hundred ninety-nine thousand, nine hundred twenty-three".