21327776273 has 8 divisors (see below), whose sum is σ = 22344364800. Its totient is φ = 20331725040.

The previous prime is 21327776257. The next prime is 21327776293. The reversal of 21327776273 is 37267772312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21327776273 - 2⁴ = 21327776257 is a prime.

It is a super-2 number, since 2×21327776273² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21327776243) 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, 5132198 + ... + 5136351.

It is an arithmetic number, because the mean of its divisors is an integer number (2793045600).

Almost surely, 2^21327776273 is an apocalyptic number.

It is an amenable number.

21327776273 is a deficient number, since it is larger than the sum of its proper divisors (1016588527).

21327776273 is a wasteful number, since it uses less digits than its factorization.

21327776273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10268647.

The product of its digits is 1037232, while the sum is 47.

The spelling of 21327776273 in words is "twenty-one billion, three hundred twenty-seven million, seven hundred seventy-six thousand, two hundred seventy-three".