56533802161 has 8 divisors (see below), whose sum is σ = 56615885480. Its totient is φ = 56451779712.

The previous prime is 56533802123. The next prime is 56533802203. The reversal of 56533802161 is 16120833565.

It can be written as a sum of positive squares in 4 ways, for example, as 68161536 + 56465640625 = 8256^2 + 237625^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56533802161 - 2⁷ = 56533802033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56533802461) 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 7 ways as a sum of consecutive naturals, for example, 2039845 + ... + 2067373.

It is an arithmetic number, because the mean of its divisors is an integer number (7076985685).

Almost surely, 2^56533802161 is an apocalyptic number.

It is an amenable number.

56533802161 is a deficient number, since it is larger than the sum of its proper divisors (82083319).

56533802161 is a wasteful number, since it uses less digits than its factorization.

56533802161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30435.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 56533802161 in words is "fifty-six billion, five hundred thirty-three million, eight hundred two thousand, one hundred sixty-one".