21626133270 has 64 divisors (see below), whose sum is σ = 59384779776. Its totient is φ = 4937500800.

The previous prime is 21626133251. The next prime is 21626133281. The reversal of 21626133270 is 7233162612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128220 + ... + 244320.

It is an arithmetic number, because the mean of its divisors is an integer number (927887184).

Almost surely, 2^21626133270 is an apocalyptic number.

21626133270 is an abundant number, since it is smaller than the sum of its proper divisors (37758646506).

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

21626133270 is a wasteful number, since it uses less digits than its factorization.

21626133270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117005.

The product of its (nonzero) digits is 18144, while the sum is 33.

Adding to 21626133270 its reverse (7233162612), we get a palindrome (28859295882).

The spelling of 21626133270 in words is "twenty-one billion, six hundred twenty-six million, one hundred thirty-three thousand, two hundred seventy".