21577271283 has 12 divisors (see below), whose sum is σ = 32807547240. Its totient is φ = 13627750176.

The previous prime is 21577271251. The next prime is 21577271323. The reversal of 21577271283 is 38217277512.

21577271283 is a `hidden beast` number, since 2 + 1 + 577 + 2 + 71 + 2 + 8 + 3 = 666.

It is not a de Polignac number, because 21577271283 - 2⁵ = 21577271251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21577273283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63091266 + ... + 63091607.

It is an arithmetic number, because the mean of its divisors is an integer number (2733962270).

Almost surely, 2^21577271283 is an apocalyptic number.

21577271283 is a deficient number, since it is larger than the sum of its proper divisors (11230275957).

21577271283 is a wasteful number, since it uses less digits than its factorization.

21577271283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126182898 (or 126182895 counting only the distinct ones).

The product of its digits is 329280, while the sum is 45.

The spelling of 21577271283 in words is "twenty-one billion, five hundred seventy-seven million, two hundred seventy-one thousand, two hundred eighty-three".