276643540650553 has 16 divisors (see below), whose sum is σ = 283520855439360. Its totient is φ = 269809163028496.

The previous prime is 276643540650523. The next prime is 276643540650571. The reversal of 276643540650553 is 355056045346672.

It is not a de Polignac number, because 276643540650553 - 2¹⁷ = 276643540519481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 276643540650491 and 276643540650500.

It is not an unprimeable number, because it can be changed into a prime (276643540650523) 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, 6700926 + ... + 24457912.

It is an arithmetic number, because the mean of its divisors is an integer number (17720053464960).

Almost surely, 2^{276643540650553} is an apocalyptic number.

It is an amenable number.

276643540650553 is a deficient number, since it is larger than the sum of its proper divisors (6877314788807).

276643540650553 is a wasteful number, since it uses less digits than its factorization.

276643540650553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17758196.

The product of its (nonzero) digits is 272160000, while the sum is 61.

The spelling of 276643540650553 in words is "two hundred seventy-six trillion, six hundred forty-three billion, five hundred forty million, six hundred fifty thousand, five hundred fifty-three".