21402311159 has 2 divisors, whose sum is σ = 21402311160. Its totient is φ = 21402311158.

The previous prime is 21402311131. The next prime is 21402311201. The reversal of 21402311159 is 95111320412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21402311159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21402311659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10701155579 + 10701155580.

It is an arithmetic number, because the mean of its divisors is an integer number (10701155580).

Almost surely, 2^21402311159 is an apocalyptic number.

21402311159 is a deficient number, since it is larger than the sum of its proper divisors (1).

21402311159 is an equidigital number, since it uses as much as digits as its factorization.

21402311159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 21402311159 in words is "twenty-one billion, four hundred two million, three hundred eleven thousand, one hundred fifty-nine".