265147330221 has 12 divisors (see below), whose sum is σ = 383588085660. Its totient is φ = 176489118720.

The previous prime is 265147330219. The next prime is 265147330267. The reversal of 265147330221 is 122033741562.

265147330221 is a `hidden beast` number, since 2 + 65 + 1 + 47 + 330 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 146680574121 + 118466756100 = 382989^2 + 344190^2 .

It is not a de Polignac number, because 265147330221 - 2¹ = 265147330219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265147330211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22974586 + ... + 22986123.

It is an arithmetic number, because the mean of its divisors is an integer number (31965673805).

Almost surely, 2^265147330221 is an apocalyptic number.

It is an amenable number.

265147330221 is a deficient number, since it is larger than the sum of its proper divisors (118440755439).

265147330221 is a wasteful number, since it uses less digits than its factorization.

265147330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45961356 (or 45961353 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 265147330221 in words is "two hundred sixty-five billion, one hundred forty-seven million, three hundred thirty thousand, two hundred twenty-one".