21403014316599 has 4 divisors (see below), whose sum is σ = 28537352422136. Its totient is φ = 14268676211064.

The previous prime is 21403014316597. The next prime is 21403014316643. The reversal of 21403014316599 is 99561341030412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21403014316599 - 2¹ = 21403014316597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21403014316597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3567169052764 + ... + 3567169052769.

It is an arithmetic number, because the mean of its divisors is an integer number (7134338105534).

Almost surely, 2^{21403014316599} is an apocalyptic number.

21403014316599 is a deficient number, since it is larger than the sum of its proper divisors (7134338105537).

21403014316599 is an equidigital number, since it uses as much as digits as its factorization.

21403014316599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7134338105536.

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 21403014316599 in words is "twenty-one trillion, four hundred three billion, fourteen million, three hundred sixteen thousand, five hundred ninety-nine".