156885342538 has 8 divisors (see below), whose sum is σ = 236907396900. Its totient is φ = 77916210240.

The previous prime is 156885342533. The next prime is 156885342553. The reversal of 156885342538 is 835243588651.

It can be written as a sum of positive squares in 2 ways, for example, as 156778778209 + 106564329 = 395953^2 + 10323^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×156885342538² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (156885342533) 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, 263230143 + ... + 263230738.

Almost surely, 2^156885342538 is an apocalyptic number.

156885342538 is a deficient number, since it is larger than the sum of its proper divisors (80022054362).

156885342538 is a wasteful number, since it uses less digits than its factorization.

156885342538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526461032.

The product of its digits is 27648000, while the sum is 58.

The spelling of 156885342538 in words is "one hundred fifty-six billion, eight hundred eighty-five million, three hundred forty-two thousand, five hundred thirty-eight".