21266626230 has 48 divisors (see below), whose sum is σ = 55308445920. Its totient is φ = 5669539584.

The previous prime is 21266626207. The next prime is 21266626243. The reversal of 21266626230 is 3262666212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 317086 + ... + 378254.

It is an arithmetic number, because the mean of its divisors is an integer number (1152259290).

Almost surely, 2^21266626230 is an apocalyptic number.

21266626230 is an abundant number, since it is smaller than the sum of its proper divisors (34041819690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21266626230 is a wasteful number, since it uses less digits than its factorization.

21266626230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65045 (or 65042 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 21266626230 in words is "twenty-one billion, two hundred sixty-six million, six hundred twenty-six thousand, two hundred thirty".