366345526221 has 16 divisors (see below), whose sum is σ = 544501988800. Its totient is φ = 243434806704.

The previous prime is 366345526207. The next prime is 366345526231. The reversal of 366345526221 is 122625543663.

366345526221 is a `hidden beast` number, since 3 + 6 + 6 + 34 + 552 + 62 + 2 + 1 = 666.

It is not a de Polignac number, because 366345526221 - 2¹¹ = 366345524173 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 (366345526231) 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, 22090006 + ... + 22106583.

It is an arithmetic number, because the mean of its divisors is an integer number (34031374300).

Almost surely, 2^366345526221 is an apocalyptic number.

It is an amenable number.

366345526221 is a deficient number, since it is larger than the sum of its proper divisors (178156462579).

366345526221 is a wasteful number, since it uses less digits than its factorization.

366345526221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44196905 (or 44196899 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The spelling of 366345526221 in words is "three hundred sixty-six billion, three hundred forty-five million, five hundred twenty-six thousand, two hundred twenty-one".