21116152602626 has 32 divisors (see below), whose sum is σ = 33758182142640. Its totient is φ = 9887202130176.

The previous prime is 21116152602607. The next prime is 21116152602641. The reversal of 21116152602626 is 62620625161112.

It can be written as a sum of positive squares in 8 ways, for example, as 15583143107401 + 5533009495225 = 3947549^2 + 2352235^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14839865 + ... + 16200428.

Almost surely, 2^{21116152602626} is an apocalyptic number.

21116152602626 is a deficient number, since it is larger than the sum of its proper divisors (12642029540014).

21116152602626 is a wasteful number, since it uses less digits than its factorization.

21116152602626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31040678.

The product of its (nonzero) digits is 103680, while the sum is 41.

Adding to 21116152602626 its reverse (62620625161112), we get a palindrome (83736777763738).

The spelling of 21116152602626 in words is "twenty-one trillion, one hundred sixteen billion, one hundred fifty-two million, six hundred two thousand, six hundred twenty-six".