36441611221 has 8 divisors (see below), whose sum is σ = 36673603904. Its totient is φ = 36209721600.

The previous prime is 36441611209. The next prime is 36441611237. The reversal of 36441611221 is 12211614463.

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 36441611221 - 2²³ = 36433222613 is a prime.

It is a super-2 number, since 2×36441611221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36441611291) 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, 759280 + ... + 805846.

It is an arithmetic number, because the mean of its divisors is an integer number (4584200488).

Almost surely, 2^36441611221 is an apocalyptic number.

It is an amenable number.

36441611221 is a deficient number, since it is larger than the sum of its proper divisors (231992683).

36441611221 is a wasteful number, since it uses less digits than its factorization.

36441611221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51531.

The product of its digits is 6912, while the sum is 31.

The spelling of 36441611221 in words is "thirty-six billion, four hundred forty-one million, six hundred eleven thousand, two hundred twenty-one".