20321416616522 has 32 divisors (see below), whose sum is σ = 36041776139520. Its totient is φ = 8407976330880.

The previous prime is 20321416616513. The next prime is 20321416616531. The reversal of 20321416616522 is 22561661412302.

It is an interprime number because it is at equal distance from previous prime (20321416616513) and next prime (20321416616531).

It is a self number, because there is not a number n which added to its sum of digits gives 20321416616522.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1230158 + ... + 6492774.

It is an arithmetic number, because the mean of its divisors is an integer number (1126305504360).

Almost surely, 2^{20321416616522} is an apocalyptic number.

20321416616522 is a deficient number, since it is larger than the sum of its proper divisors (15720359522998).

20321416616522 is a wasteful number, since it uses less digits than its factorization.

20321416616522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5272166.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 20321416616522 in words is "twenty trillion, three hundred twenty-one billion, four hundred sixteen million, six hundred sixteen thousand, five hundred twenty-two".