6535161801 has 72 divisors (see below), whose sum is σ = 11599720704. Its totient is φ = 3529552320.

The previous prime is 6535161799. The next prime is 6535161821. The reversal of 6535161801 is 1081615356.

6535161801 is a `hidden beast` number, since 6 + 5 + 35 + 1 + 618 + 0 + 1 = 666.

It is not a de Polignac number, because 6535161801 - 2¹ = 6535161799 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6535161821) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 582295 + ... + 593411.

It is an arithmetic number, because the mean of its divisors is an integer number (161107232).

Almost surely, 2^6535161801 is an apocalyptic number.

It is an amenable number.

6535161801 is a deficient number, since it is larger than the sum of its proper divisors (5064558903).

6535161801 is a wasteful number, since it uses less digits than its factorization.

6535161801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11211 (or 11201 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 6535161801 is about 80840.3476056356. The cubic root of 6535161801 is about 1869.6147033308.

The spelling of 6535161801 in words is "six billion, five hundred thirty-five million, one hundred sixty-one thousand, eight hundred one".