156213126733 has 4 divisors (see below), whose sum is σ = 156223129788. Its totient is φ = 156203123680.

The previous prime is 156213126731. The next prime is 156213126749. The reversal of 156213126733 is 337621312651.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 114635062084 + 41578064649 = 338578^2 + 203907^2 .

It is a cyclic number.

It is not a de Polignac number, because 156213126733 - 2¹ = 156213126731 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156213126731) 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, 4978066 + ... + 5009347.

It is an arithmetic number, because the mean of its divisors is an integer number (39055782447).

Almost surely, 2^156213126733 is an apocalyptic number.

It is an amenable number.

156213126733 is a deficient number, since it is larger than the sum of its proper divisors (10003055).

156213126733 is an equidigital number, since it uses as much as digits as its factorization.

156213126733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10003054.

The product of its digits is 136080, while the sum is 40.

The spelling of 156213126733 in words is "one hundred fifty-six billion, two hundred thirteen million, one hundred twenty-six thousand, seven hundred thirty-three".