36221297845 has 8 divisors (see below), whose sum is σ = 43559845560. Its totient is φ = 28914179520.

The previous prime is 36221297831. The next prime is 36221297863. The reversal of 36221297845 is 54879212263.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 635493681 + 35585804164 = 25209^2 + 188642^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 36221297845 - 2²³ = 36212909237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7854810 + ... + 7859419.

It is an arithmetic number, because the mean of its divisors is an integer number (5444980695).

Almost surely, 2^36221297845 is an apocalyptic number.

It is an amenable number.

36221297845 is a deficient number, since it is larger than the sum of its proper divisors (7338547715).

36221297845 is a wasteful number, since it uses less digits than its factorization.

36221297845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15714695.

The product of its digits is 1451520, while the sum is 49.

The spelling of 36221297845 in words is "thirty-six billion, two hundred twenty-one million, two hundred ninety-seven thousand, eight hundred forty-five".