181369536001 has 8 divisors (see below), whose sum is σ = 184898327400. Its totient is φ = 177844697472.

The previous prime is 181369535993. The next prime is 181369536017. The reversal of 181369536001 is 100635963181.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 46716499600 + 134653036401 = 216140^2 + 366951^2 .

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 181369536001 - 2³ = 181369535993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181369536701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 895476 + ... + 1079173.

It is an arithmetic number, because the mean of its divisors is an integer number (23112290925).

Almost surely, 2^181369536001 is an apocalyptic number.

It is an amenable number.

181369536001 is a deficient number, since it is larger than the sum of its proper divisors (3528791399).

181369536001 is a wasteful number, since it uses less digits than its factorization.

181369536001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976435.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 181369536001 in words is "one hundred eighty-one billion, three hundred sixty-nine million, five hundred thirty-six thousand, one".