21162401159 has 16 divisors (see below), whose sum is σ = 23195289600. Its totient is φ = 19217985024.

The previous prime is 21162401147. The next prime is 21162401173. The reversal of 21162401159 is 95110426112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21162401159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21162401129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 773882 + ... + 800760.

It is an arithmetic number, because the mean of its divisors is an integer number (1449705600).

Almost surely, 2^21162401159 is an apocalyptic number.

21162401159 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

21162401159 is a deficient number, since it is larger than the sum of its proper divisors (2032888441).

21162401159 is a wasteful number, since it uses less digits than its factorization.

21162401159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28522.

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 21162401159 in words is "twenty-one billion, one hundred sixty-two million, four hundred one thousand, one hundred fifty-nine".