156271000861 has 4 divisors (see below), whose sum is σ = 164495790400. Its totient is φ = 148046211324.

The previous prime is 156271000841. The next prime is 156271000871. The reversal of 156271000861 is 168000172651.

156271000861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 156271000861 - 2¹¹ = 156270998813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 156271000861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156271000841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4112394741 + ... + 4112394778.

It is an arithmetic number, because the mean of its divisors is an integer number (41123947600).

Almost surely, 2^156271000861 is an apocalyptic number.

It is an amenable number.

156271000861 is a deficient number, since it is larger than the sum of its proper divisors (8224789539).

156271000861 is an equidigital number, since it uses as much as digits as its factorization.

156271000861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8224789538.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 156271000861 in words is "one hundred fifty-six billion, two hundred seventy-one million, eight hundred sixty-one", and thus it is an aban number.