35564764221 has 48 divisors (see below), whose sum is σ = 58969872000. Its totient is φ = 20233027584.

The previous prime is 35564764199. The next prime is 35564764241. The reversal of 35564764221 is 12246746553.

35564764221 is a `hidden beast` number, since 3 + 5 + 564 + 7 + 64 + 2 + 21 = 666.

It is not a de Polignac number, because 35564764221 - 2⁵ = 35564764189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35564764241) 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 47 ways as a sum of consecutive naturals, for example, 16320510 + ... + 16322688.

It is an arithmetic number, because the mean of its divisors is an integer number (1228539000).

Almost surely, 2^35564764221 is an apocalyptic number.

It is an amenable number.

35564764221 is a deficient number, since it is larger than the sum of its proper divisors (23405107779).

35564764221 is a wasteful number, since it uses less digits than its factorization.

35564764221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3218 (or 3215 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The spelling of 35564764221 in words is "thirty-five billion, five hundred sixty-four million, seven hundred sixty-four thousand, two hundred twenty-one".