273656382021 has 48 divisors (see below), whose sum is σ = 443357965440. Its totient is φ = 161192280960.

The previous prime is 273656381993. The next prime is 273656382091. The reversal of 273656382021 is 120283656372.

273656382021 is a `hidden beast` number, since 2 + 7 + 3 + 6 + 5 + 638 + 2 + 0 + 2 + 1 = 666.

273656382021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 273656382021 - 2¹⁷ = 273656250949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273656382091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3325651 + ... + 3406943.

It is an arithmetic number, because the mean of its divisors is an integer number (9236624280).

Almost surely, 2^273656382021 is an apocalyptic number.

It is an amenable number.

273656382021 is a deficient number, since it is larger than the sum of its proper divisors (169701583419).

273656382021 is a wasteful number, since it uses less digits than its factorization.

273656382021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82266 (or 82263 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 273656382021 in words is "two hundred seventy-three billion, six hundred fifty-six million, three hundred eighty-two thousand, twenty-one".