21634025726010 has 32 divisors (see below), whose sum is σ = 51923188746432. Its totient is φ = 5768903859840.

The previous prime is 21634025725999. The next prime is 21634025726017. The reversal of 21634025726010 is 1062752043612.

It is a super-2 number, since 2×21634025726010² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21634025726010.

It is not an unprimeable number, because it can be changed into a prime (21634025726017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9565456 + ... + 11608875.

It is an arithmetic number, because the mean of its divisors is an integer number (1622599648326).

Almost surely, 2^{21634025726010} is an apocalyptic number.

21634025726010 is an abundant number, since it is smaller than the sum of its proper divisors (30289163020422).

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

21634025726010 is a wasteful number, since it uses less digits than its factorization.

21634025726010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21208398.

The product of its (nonzero) digits is 120960, while the sum is 39.

Adding to 21634025726010 its reverse (1062752043612), we get a palindrome (22696777769622).

The spelling of 21634025726010 in words is "twenty-one trillion, six hundred thirty-four billion, twenty-five million, seven hundred twenty-six thousand, ten".