21888015283 has 2 divisors, whose sum is σ = 21888015284. Its totient is φ = 21888015282.

The previous prime is 21888015269. The next prime is 21888015293. The reversal of 21888015283 is 38251088812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21888015283 - 2²⁹ = 21351144371 is a prime.

It is not a weakly prime, because it can be changed into another prime (21888015203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10944007641 + 10944007642.

It is an arithmetic number, because the mean of its divisors is an integer number (10944007642).

Almost surely, 2^21888015283 is an apocalyptic number.

21888015283 is a deficient number, since it is larger than the sum of its proper divisors (1).

21888015283 is an equidigital number, since it uses as much as digits as its factorization.

21888015283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 245760, while the sum is 46.

The spelling of 21888015283 in words is "twenty-one billion, eight hundred eighty-eight million, fifteen thousand, two hundred eighty-three".