21904358080526 has 32 divisors (see below), whose sum is σ = 33964321248000. Its totient is φ = 10583921606400.

The previous prime is 21904358080463. The next prime is 21904358080531. The reversal of 21904358080526 is 62508085340912.

It is a happy number.

It is a super-2 number, since 2×21904358080526² (a number of 27 digits) contains 22 as substring.

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 in 15 ways as a sum of consecutive naturals, for example, 226355600 + ... + 226452348.

It is an arithmetic number, because the mean of its divisors is an integer number (1061385039000).

Almost surely, 2^{21904358080526} is an apocalyptic number.

21904358080526 is a deficient number, since it is larger than the sum of its proper divisors (12059963167474).

21904358080526 is a wasteful number, since it uses less digits than its factorization.

21904358080526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101900.

The product of its (nonzero) digits is 4147200, while the sum is 53.

The spelling of 21904358080526 in words is "twenty-one trillion, nine hundred four billion, three hundred fifty-eight million, eighty thousand, five hundred twenty-six".