21416863088407 has 2 divisors, whose sum is σ = 21416863088408. Its totient is φ = 21416863088406.

The previous prime is 21416863088371. The next prime is 21416863088419. The reversal of 21416863088407 is 70488036861412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21416863088407 - 2²⁷ = 21416728870679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21416863088477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10708431544203 + 10708431544204.

It is an arithmetic number, because the mean of its divisors is an integer number (10708431544204).

Almost surely, 2^{21416863088407} is an apocalyptic number.

21416863088407 is a deficient number, since it is larger than the sum of its proper divisors (1).

21416863088407 is an equidigital number, since it uses as much as digits as its factorization.

21416863088407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12386304, while the sum is 58.

The spelling of 21416863088407 in words is "twenty-one trillion, four hundred sixteen billion, eight hundred sixty-three million, eighty-eight thousand, four hundred seven".