21314503963 has 2 divisors, whose sum is σ = 21314503964. Its totient is φ = 21314503962.

The previous prime is 21314503937. The next prime is 21314504017. The reversal of 21314503963 is 36930541312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21314503963 - 2⁹ = 21314503451 is a prime.

It is not a weakly prime, because it can be changed into another prime (21314503163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10657251981 + 10657251982.

It is an arithmetic number, because the mean of its divisors is an integer number (10657251982).

Almost surely, 2^21314503963 is an apocalyptic number.

21314503963 is a deficient number, since it is larger than the sum of its proper divisors (1).

21314503963 is an equidigital number, since it uses as much as digits as its factorization.

21314503963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 21314503963 in words is "twenty-one billion, three hundred fourteen million, five hundred three thousand, nine hundred sixty-three".