21602471026376 has 16 divisors (see below), whose sum is σ = 42265704182400. Its totient is φ = 10331616577744.

The previous prime is 21602471026327. The next prime is 21602471026429. The reversal of 21602471026376 is 67362017420612.

It is a self number, because there is not a number n which added to its sum of digits gives 21602471026376.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58702366736 + ... + 58702367103.

It is an arithmetic number, because the mean of its divisors is an integer number (2641606511400).

Almost surely, 2^{21602471026376} is an apocalyptic number.

It is an amenable number.

21602471026376 is a deficient number, since it is larger than the sum of its proper divisors (20663233156024).

21602471026376 is a wasteful number, since it uses less digits than its factorization.

21602471026376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117404733868 (or 117404733864 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 47.

Adding to 21602471026376 its reverse (67362017420612), we get a palindrome (88964488446988).

The spelling of 21602471026376 in words is "twenty-one trillion, six hundred two billion, four hundred seventy-one million, twenty-six thousand, three hundred seventy-six".