21626205500006 has 16 divisors (see below), whose sum is σ = 32640010301184. Its totient is φ = 10746208927944.

The previous prime is 21626205499939. The next prime is 21626205500051. The reversal of 21626205500006 is 60000550262612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4634111 + ... + 8045333.

It is an arithmetic number, because the mean of its divisors is an integer number (2040000643824).

Almost surely, 2^{21626205500006} is an apocalyptic number.

21626205500006 is a deficient number, since it is larger than the sum of its proper divisors (11013804801178).

21626205500006 is a wasteful number, since it uses less digits than its factorization.

21626205500006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3430835.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 21626205500006 its reverse (60000550262612), we get a palindrome (81626755762618).

The spelling of 21626205500006 in words is "twenty-one trillion, six hundred twenty-six billion, two hundred five million, five hundred thousand, six".