15450142187 has 2 divisors, whose sum is σ = 15450142188. Its totient is φ = 15450142186.

The previous prime is 15450142171. The next prime is 15450142229. The reversal of 15450142187 is 78124105451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15450142187 - 2⁴ = 15450142171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15450142187.

It is not a weakly prime, because it can be changed into another prime (15450142117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7725071093 + 7725071094.

It is an arithmetic number, because the mean of its divisors is an integer number (7725071094).

Almost surely, 2^15450142187 is an apocalyptic number.

15450142187 is a deficient number, since it is larger than the sum of its proper divisors (1).

15450142187 is an equidigital number, since it uses as much as digits as its factorization.

15450142187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44800, while the sum is 38.

The spelling of 15450142187 in words is "fifteen billion, four hundred fifty million, one hundred forty-two thousand, one hundred eighty-seven".