275645647272 has 32 divisors (see below), whose sum is σ = 690041638080. Its totient is φ = 91758213120.

The previous prime is 275645647271. The next prime is 275645647279. The reversal of 275645647272 is 272746546572.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (275645647271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7711129 + ... + 7746792.

It is an arithmetic number, because the mean of its divisors is an integer number (21563801190).

Almost surely, 2^275645647272 is an apocalyptic number.

It is an amenable number.

275645647272 is an abundant number, since it is smaller than the sum of its proper divisors (414395990808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

275645647272 is a wasteful number, since it uses less digits than its factorization.

275645647272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15458673 (or 15458669 counting only the distinct ones).

The product of its digits is 39513600, while the sum is 57.

The spelling of 275645647272 in words is "two hundred seventy-five billion, six hundred forty-five million, six hundred forty-seven thousand, two hundred seventy-two".