156013222621642 has 8 divisors (see below), whose sum is σ = 242089483378500. Its totient is φ = 75316728162144.

The previous prime is 156013222621621. The next prime is 156013222621661. The reversal of 156013222621642 is 246126222310651.

It can be written as a sum of positive squares in 2 ways, for example, as 149583148915561 + 6430073706081 = 12230419^2 + 2535759^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1344941574267 + ... + 1344941574382.

Almost surely, 2^{156013222621642} is an apocalyptic number.

156013222621642 is a deficient number, since it is larger than the sum of its proper divisors (86076260756858).

156013222621642 is a wasteful number, since it uses less digits than its factorization.

156013222621642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689883148680.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 156013222621642 in words is "one hundred fifty-six trillion, thirteen billion, two hundred twenty-two million, six hundred twenty-one thousand, six hundred forty-two".