2156454161136 has 360 divisors, whose sum is σ = 6878674403328. Its totient is φ = 629520249600.

The previous prime is 2156454161083. The next prime is 2156454161161. The reversal of 2156454161136 is 6311614546512.

2156454161136 is a `hidden beast` number, since 2 + 1 + 5 + 6 + 454 + 1 + 61 + 136 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2156454161091 and 2156454161100.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 120443161 + ... + 120461063.

Almost surely, 2^{2156454161136} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2156454161136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3439337201664).

2156454161136 is an abundant number, since it is smaller than the sum of its proper divisors (4722220242192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2156454161136 is a wasteful number, since it uses less digits than its factorization.

2156454161136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18193 (or 18173 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The spelling of 2156454161136 in words is "two trillion, one hundred fifty-six billion, four hundred fifty-four million, one hundred sixty-one thousand, one hundred thirty-six".