15542234999 has 2 divisors, whose sum is σ = 15542235000. Its totient is φ = 15542234998.

The previous prime is 15542234993. The next prime is 15542235041. The reversal of 15542234999 is 99943224551.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15542234999 is a prime.

It is a super-2 number, since 2×15542234999² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15542234999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15542234993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7771117499 + 7771117500.

It is an arithmetic number, because the mean of its divisors is an integer number (7771117500).

Almost surely, 2^15542234999 is an apocalyptic number.

15542234999 is a deficient number, since it is larger than the sum of its proper divisors (1).

15542234999 is an equidigital number, since it uses as much as digits as its factorization.

15542234999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3499200, while the sum is 53.

The spelling of 15542234999 in words is "fifteen billion, five hundred forty-two million, two hundred thirty-four thousand, nine hundred ninety-nine".