21560026151 has 16 divisors (see below), whose sum is σ = 22271445504. Its totient is φ = 20859052704.

The previous prime is 21560026109. The next prime is 21560026153. The reversal of 21560026151 is 15162006512.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21560026151 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 (21560026153) 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, 2098910 + ... + 2109156.

It is an arithmetic number, because the mean of its divisors is an integer number (1391965344).

Almost surely, 2^21560026151 is an apocalyptic number.

21560026151 is a deficient number, since it is larger than the sum of its proper divisors (711419353).

21560026151 is a wasteful number, since it uses less digits than its factorization.

21560026151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10750.

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 21560026151 in words is "twenty-one billion, five hundred sixty million, twenty-six thousand, one hundred fifty-one".