21444051403110 has 64 divisors (see below), whose sum is σ = 58822651210752. Its totient is φ = 4901107326336.

The previous prime is 21444051403079. The next prime is 21444051403129. The reversal of 21444051403110 is 1130415044412.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1415209 + ... + 6700068.

It is an arithmetic number, because the mean of its divisors is an integer number (919103925168).

Almost surely, 2^{21444051403110} is an apocalyptic number.

21444051403110 is an abundant number, since it is smaller than the sum of its proper divisors (37378599807642).

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

21444051403110 is a wasteful number, since it uses less digits than its factorization.

21444051403110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8127877.

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 21444051403110 its reverse (1130415044412), we get a palindrome (22574466447522).

The spelling of 21444051403110 in words is "twenty-one trillion, four hundred forty-four billion, fifty-one million, four hundred three thousand, one hundred ten".