156142509549 has 16 divisors (see below), whose sum is σ = 233952657792. Its totient is φ = 91909971648.

The previous prime is 156142509547. The next prime is 156142509553. The reversal of 156142509549 is 945905241651.

It is not a de Polignac number, because 156142509549 - 2¹ = 156142509547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156142509547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87035062 + ... + 87036855.

It is an arithmetic number, because the mean of its divisors is an integer number (14622041112).

Almost surely, 2^156142509549 is an apocalyptic number.

It is an amenable number.

156142509549 is a deficient number, since it is larger than the sum of its proper divisors (77810148243).

156142509549 is a wasteful number, since it uses less digits than its factorization.

156142509549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174071956.

The product of its (nonzero) digits is 1944000, while the sum is 51.

The spelling of 156142509549 in words is "one hundred fifty-six billion, one hundred forty-two million, five hundred nine thousand, five hundred forty-nine".