13542489923 has 2 divisors, whose sum is σ = 13542489924. Its totient is φ = 13542489922.

The previous prime is 13542489899. The next prime is 13542489929. The reversal of 13542489923 is 32998424531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13542489923 - 2²⁸ = 13274054467 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (13542489929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6771244961 + 6771244962.

It is an arithmetic number, because the mean of its divisors is an integer number (6771244962).

Almost surely, 2^13542489923 is an apocalyptic number.

13542489923 is a deficient number, since it is larger than the sum of its proper divisors (1).

13542489923 is an equidigital number, since it uses as much as digits as its factorization.

13542489923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 50.

The spelling of 13542489923 in words is "thirteen billion, five hundred forty-two million, four hundred eighty-nine thousand, nine hundred twenty-three".