56835633181 has 2 divisors, whose sum is σ = 56835633182. Its totient is φ = 56835633180.

The previous prime is 56835633157. The next prime is 56835633199. The reversal of 56835633181 is 18133653865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41476988281 + 15358644900 = 203659^2 + 123930^2 .

It is a cyclic number.

It is not a de Polignac number, because 56835633181 - 2⁵ = 56835633149 is a prime.

It is a super-2 number, since 2×56835633181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56835633121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28417816590 + 28417816591.

It is an arithmetic number, because the mean of its divisors is an integer number (28417816591).

Almost surely, 2^56835633181 is an apocalyptic number.

It is an amenable number.

56835633181 is a deficient number, since it is larger than the sum of its proper divisors (1).

56835633181 is an equidigital number, since it uses as much as digits as its factorization.

56835633181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 49.

The spelling of 56835633181 in words is "fifty-six billion, eight hundred thirty-five million, six hundred thirty-three thousand, one hundred eighty-one".