36454471221 has 16 divisors (see below), whose sum is σ = 55694721024. Its totient is φ = 20776732464.

The previous prime is 36454471213. The next prime is 36454471231. The reversal of 36454471221 is 12217445463.

It is not a de Polignac number, because 36454471221 - 2³ = 36454471213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36454471221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36454471231) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2258181 + ... + 2274266.

It is an arithmetic number, because the mean of its divisors is an integer number (3480920064).

Almost surely, 2^36454471221 is an apocalyptic number.

It is an amenable number.

36454471221 is a deficient number, since it is larger than the sum of its proper divisors (19240249803).

36454471221 is a wasteful number, since it uses less digits than its factorization.

36454471221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4532840.

The product of its digits is 161280, while the sum is 39.

The spelling of 36454471221 in words is "thirty-six billion, four hundred fifty-four million, four hundred seventy-one thousand, two hundred twenty-one".