21527514473419 has 2 divisors, whose sum is σ = 21527514473420. Its totient is φ = 21527514473418.

The previous prime is 21527514473401. The next prime is 21527514473453. The reversal of 21527514473419 is 91437441572512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21527514473419 - 2²³ = 21527506084811 is a prime.

It is a super-2 number, since 2×21527514473419² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21527514473419.

It is not a weakly prime, because it can be changed into another prime (21527514470419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10763757236709 + 10763757236710.

It is an arithmetic number, because the mean of its divisors is an integer number (10763757236710).

Almost surely, 2^{21527514473419} is an apocalyptic number.

21527514473419 is a deficient number, since it is larger than the sum of its proper divisors (1).

21527514473419 is an equidigital number, since it uses as much as digits as its factorization.

21527514473419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8467200, while the sum is 55.

The spelling of 21527514473419 in words is "twenty-one trillion, five hundred twenty-seven billion, five hundred fourteen million, four hundred seventy-three thousand, four hundred nineteen".