36457291221 has 16 divisors (see below), whose sum is σ = 53011580160. Its totient is φ = 22151263680.

The previous prime is 36457291193. The next prime is 36457291301. The reversal of 36457291221 is 12219275463.

It is a happy number.

36457291221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 36457291221 - 2¹¹ = 36457289173 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36457291621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5913390 + ... + 5919551.

It is an arithmetic number, because the mean of its divisors is an integer number (3313223760).

Almost surely, 2^36457291221 is an apocalyptic number.

It is an amenable number.

36457291221 is a deficient number, since it is larger than the sum of its proper divisors (16554288939).

36457291221 is a wasteful number, since it uses less digits than its factorization.

36457291221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11833036.

The product of its digits is 181440, while the sum is 42.

The spelling of 36457291221 in words is "thirty-six billion, four hundred fifty-seven million, two hundred ninety-one thousand, two hundred twenty-one".