36017240821 has 4 divisors (see below), whose sum is σ = 36057847392. Its totient is φ = 35976634252.

The previous prime is 36017240813. The next prime is 36017240827. The reversal of 36017240821 is 12804271063.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12804271063 = 61 ⋅209906083.

It is a cyclic number.

It is not a de Polignac number, because 36017240821 - 2³ = 36017240813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36017240827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20301955 + ... + 20303728.

It is an arithmetic number, because the mean of its divisors is an integer number (9014461848).

Almost surely, 2^36017240821 is an apocalyptic number.

It is an amenable number.

36017240821 is a deficient number, since it is larger than the sum of its proper divisors (40606571).

36017240821 is an equidigital number, since it uses as much as digits as its factorization.

36017240821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40606570.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 36017240821 in words is "thirty-six billion, seventeen million, two hundred forty thousand, eight hundred twenty-one".