276491068845021 has 40 divisors (see below), whose sum is σ = 435122043127200. Its totient is φ = 174483849198240.

The previous prime is 276491068844993. The next prime is 276491068845029. The reversal of 276491068845021 is 120548860194672.

It is a happy number.

276491068845021 is a `hidden beast` number, since 2 + 7 + 6 + 49 + 1 + 0 + 6 + 8 + 84 + 502 + 1 = 666.

It is not a de Polignac number, because 276491068845021 - 2²¹ = 276491066747869 is a prime.

It is a super-2 number, since 2×276491068845021² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 276491068845021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276491068845029) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 71199015 + ... + 74981876.

It is an arithmetic number, because the mean of its divisors is an integer number (10878051078180).

Almost surely, 2^{276491068845021} is an apocalyptic number.

It is an amenable number.

276491068845021 is a deficient number, since it is larger than the sum of its proper divisors (158630974282179).

276491068845021 is a wasteful number, since it uses less digits than its factorization.

276491068845021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146182151 (or 146182142 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 276491068845021 in words is "two hundred seventy-six trillion, four hundred ninety-one billion, sixty-eight million, eight hundred forty-five thousand, twenty-one".