21477627319 has 2 divisors, whose sum is σ = 21477627320. Its totient is φ = 21477627318.

The previous prime is 21477627293. The next prime is 21477627343. The reversal of 21477627319 is 91372677412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21477627319 - 2¹³ = 21477619127 is a prime.

It is a super-2 number, since 2×21477627319² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21477622319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10738813659 + 10738813660.

It is an arithmetic number, because the mean of its divisors is an integer number (10738813660).

Almost surely, 2^21477627319 is an apocalyptic number.

21477627319 is a deficient number, since it is larger than the sum of its proper divisors (1).

21477627319 is an equidigital number, since it uses as much as digits as its factorization.

21477627319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 49.

The spelling of 21477627319 in words is "twenty-one billion, four hundred seventy-seven million, six hundred twenty-seven thousand, three hundred nineteen".