156642313243 has 8 divisors (see below), whose sum is σ = 168950064528. Its totient is φ = 144371468064.

The previous prime is 156642313183. The next prime is 156642313279. The reversal of 156642313243 is 342313246651.

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

It is a cyclic number.

It is not a de Polignac number, because 156642313243 - 2¹³ = 156642305051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156642313196 and 156642313205.

It is not an unprimeable number, because it can be changed into a prime (156642313843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9217705 + ... + 9234682.

It is an arithmetic number, because the mean of its divisors is an integer number (21118758066).

Almost surely, 2^156642313243 is an apocalyptic number.

156642313243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

156642313243 is a deficient number, since it is larger than the sum of its proper divisors (12307751285).

156642313243 is a wasteful number, since it uses less digits than its factorization.

156642313243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18453053.

The product of its digits is 311040, while the sum is 40.

Adding to 156642313243 its reverse (342313246651), we get a palindrome (498955559894).

The spelling of 156642313243 in words is "one hundred fifty-six billion, six hundred forty-two million, three hundred thirteen thousand, two hundred forty-three".