156113085749 has 4 divisors (see below), whose sum is σ = 156132852300. Its totient is φ = 156093319200.

The previous prime is 156113085697. The next prime is 156113085803. The reversal of 156113085749 is 947580311651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947580311651 = 4951 ⋅191391701.

It can be written as a sum of positive squares in 2 ways, for example, as 38657458225 + 117455627524 = 196615^2 + 342718^2 .

It is a cyclic number.

It is not a de Polignac number, because 156113085749 - 2²⁰ = 156112037173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156113085697 and 156113085706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156113084749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9871424 + ... + 9887225.

It is an arithmetic number, because the mean of its divisors is an integer number (39033213075).

Almost surely, 2^156113085749 is an apocalyptic number.

It is an amenable number.

156113085749 is a deficient number, since it is larger than the sum of its proper divisors (19766551).

156113085749 is an equidigital number, since it uses as much as digits as its factorization.

156113085749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19766550.

The product of its (nonzero) digits is 907200, while the sum is 50.

The spelling of 156113085749 in words is "one hundred fifty-six billion, one hundred thirteen million, eighty-five thousand, seven hundred forty-nine".