12156887701 has 24 divisors (see below), whose sum is σ = 14501118744. Its totient is φ = 10158382080.

The previous prime is 12156887669. The next prime is 12156887707. The reversal of 12156887701 is 10778865121.

12156887701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1825201 + 12155062500 = 1351^2 + 110250^2 .

It is not a de Polignac number, because 12156887701 - 2⁵ = 12156887669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12156887707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 319761 + ... + 355753.

It is an arithmetic number, because the mean of its divisors is an integer number (604213281).

Almost surely, 2^12156887701 is an apocalyptic number.

It is an amenable number.

12156887701 is a deficient number, since it is larger than the sum of its proper divisors (2344231043).

12156887701 is a wasteful number, since it uses less digits than its factorization.

12156887701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36181 (or 36174 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 46.

The spelling of 12156887701 in words is "twelve billion, one hundred fifty-six million, eight hundred eighty-seven thousand, seven hundred one".