21160422526 has 4 divisors (see below), whose sum is σ = 31740633792. Its totient is φ = 10580211262.

The previous prime is 21160422499. The next prime is 21160422551. The reversal of 21160422526 is 62522406112.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5290105630 + ... + 5290105633.

It is an arithmetic number, because the mean of its divisors is an integer number (7935158448).

Almost surely, 2^21160422526 is an apocalyptic number.

21160422526 is a deficient number, since it is larger than the sum of its proper divisors (10580211266).

21160422526 is a wasteful number, since it uses less digits than its factorization.

21160422526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10580211265.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 21160422526 its reverse (62522406112), we get a palindrome (83682828638).

The spelling of 21160422526 in words is "twenty-one billion, one hundred sixty million, four hundred twenty-two thousand, five hundred twenty-six".