21641645150110 has 16 divisors (see below), whose sum is σ = 38958637497696. Its totient is φ = 8655841120608.

The previous prime is 21641645150107. The next prime is 21641645150117. The reversal of 21641645150110 is 1105154614612.

It is a self number, because there is not a number n which added to its sum of digits gives 21641645150110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21641645150117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102006162 + ... + 102218101.

It is an arithmetic number, because the mean of its divisors is an integer number (2434914843606).

Almost surely, 2^{21641645150110} is an apocalyptic number.

21641645150110 is a deficient number, since it is larger than the sum of its proper divisors (17316992347586).

21641645150110 is a wasteful number, since it uses less digits than its factorization.

21641645150110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204234867.

The product of its (nonzero) digits is 28800, while the sum is 37.

Adding to 21641645150110 its reverse (1105154614612), we get a palindrome (22746799764722).

The spelling of 21641645150110 in words is "twenty-one trillion, six hundred forty-one billion, six hundred forty-five million, one hundred fifty thousand, one hundred ten".