21627587147 has 2 divisors, whose sum is σ = 21627587148. Its totient is φ = 21627587146.

The previous prime is 21627587129. The next prime is 21627587167. The reversal of 21627587147 is 74178572612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21627587147 - 2¹⁶ = 21627521611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21627587095 and 21627587104.

It is not a weakly prime, because it can be changed into another prime (21627587167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10813793573 + 10813793574.

It is an arithmetic number, because the mean of its divisors is an integer number (10813793574).

Almost surely, 2^21627587147 is an apocalyptic number.

21627587147 is a deficient number, since it is larger than the sum of its proper divisors (1).

21627587147 is an equidigital number, since it uses as much as digits as its factorization.

21627587147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1317120, while the sum is 50.

The spelling of 21627587147 in words is "twenty-one billion, six hundred twenty-seven million, five hundred eighty-seven thousand, one hundred forty-seven".