156841648249 has 24 divisors (see below), whose sum is σ = 185703270536. Its totient is φ = 131582880000.

The previous prime is 156841648207. The next prime is 156841648297. The reversal of 156841648249 is 942846148651.

It can be written as a sum of positive squares in 4 ways, for example, as 2516025600 + 154325622649 = 50160^2 + 392843^2 .

It is not a de Polignac number, because 156841648249 - 2⁹ = 156841647737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156841648193 and 156841648202.

It is not an unprimeable number, because it can be changed into a prime (156841648849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8032999 + ... + 8052499.

Almost surely, 2^156841648249 is an apocalyptic number.

It is an amenable number.

156841648249 is a deficient number, since it is larger than the sum of its proper divisors (28861622287).

156841648249 is a wasteful number, since it uses less digits than its factorization.

156841648249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24649 (or 24638 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 58.

The spelling of 156841648249 in words is "one hundred fifty-six billion, eight hundred forty-one million, six hundred forty-eight thousand, two hundred forty-nine".