36440861281 has 8 divisors (see below), whose sum is σ = 39782764224. Its totient is φ = 33103807920.

The previous prime is 36440861269. The next prime is 36440861287. The reversal of 36440861281 is 18216804463.

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 36440861281 - 2²⁷ = 36306643553 is a prime.

It is a super-2 number, since 2×36440861281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36440861287) 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, 1196670 + ... + 1226743.

It is an arithmetic number, because the mean of its divisors is an integer number (4972845528).

Almost surely, 2^36440861281 is an apocalyptic number.

It is an amenable number.

36440861281 is a deficient number, since it is larger than the sum of its proper divisors (3341902943).

36440861281 is a wasteful number, since it uses less digits than its factorization.

36440861281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424791.

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 36440861281 in words is "thirty-six billion, four hundred forty million, eight hundred sixty-one thousand, two hundred eighty-one".