156789940653241 has 27 divisors (see below), whose sum is σ = 184734393723621. Its totient is φ = 132684360924024.

The previous prime is 156789940653209. The next prime is 156789940653301. The reversal of 156789940653241 is 142356049987651.

The square root of 156789940653241 is 12521579.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 156789940653241 - 2⁵ = 156789940653209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (156789940654241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6924421866 + ... + 6924444508.

It is a 3-persistent number, because k⋅156789940653241 is pandigital for 1 ≤ k ≤ 3, but not for k = 4.

Almost surely, 2^{156789940653241} is an apocalyptic number.

156789940653241 is the 12521579-th square number.

156789940653241 is the 6260790-th centered octagonal number.

It is an amenable number.

156789940653241 is a deficient number, since it is larger than the sum of its proper divisors (27944453070380).

156789940653241 is an frugal number, since it uses more digits than its factorization.

156789940653241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45458 (or 22729 counting only the distinct ones).

The product of its (nonzero) digits is 391910400, while the sum is 70.

The spelling of 156789940653241 in words is "one hundred fifty-six trillion, seven hundred eighty-nine billion, nine hundred forty million, six hundred fifty-three thousand, two hundred forty-one".