27221172047 has 2 divisors, whose sum is σ = 27221172048. Its totient is φ = 27221172046.

The previous prime is 27221172001. The next prime is 27221172109. The reversal of 27221172047 is 74027112272.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27221172047 is a prime.

It is a super-2 number, since 2×27221172047² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27221171998 and 27221172016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27221172547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13610586023 + 13610586024.

It is an arithmetic number, because the mean of its divisors is an integer number (13610586024).

Almost surely, 2^27221172047 is an apocalyptic number.

27221172047 is a deficient number, since it is larger than the sum of its proper divisors (1).

27221172047 is an equidigital number, since it uses as much as digits as its factorization.

27221172047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21952, while the sum is 35.

The spelling of 27221172047 in words is "twenty-seven billion, two hundred twenty-one million, one hundred seventy-two thousand, forty-seven".