6156536121 has 12 divisors (see below), whose sum is σ = 9199422180. Its totient is φ = 3962827680.

The previous prime is 6156536101. The next prime is 6156536131. The reversal of 6156536121 is 1216356516.

6156536121 is a `hidden beast` number, since 61 + 56 + 536 + 12 + 1 = 666.

6156536121 is digitally balanced in base 3, 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 2 ways, for example, as 1710980496 + 4445555625 = 41364^2 + 66675^2 .

It is not a de Polignac number, because 6156536121 - 2⁷ = 6156535993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6156536101) 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 11 ways as a sum of consecutive naturals, for example, 11793870 + ... + 11794391.

It is an arithmetic number, because the mean of its divisors is an integer number (766618515).

Almost surely, 2^6156536121 is an apocalyptic number.

It is an amenable number.

6156536121 is a deficient number, since it is larger than the sum of its proper divisors (3042886059).

6156536121 is a wasteful number, since it uses less digits than its factorization.

6156536121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23588296 (or 23588293 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 6156536121 is about 78463.5974258127. The cubic root of 6156536121 is about 1832.7876255226.

The spelling of 6156536121 in words is "six billion, one hundred fifty-six million, five hundred thirty-six thousand, one hundred twenty-one".