20616916635574 has 48 divisors (see below), whose sum is σ = 37329305296896. Its totient is φ = 8506026118800.

The previous prime is 20616916635541. The next prime is 20616916635587. The reversal of 20616916635574 is 47553661961602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17185044 + ... + 18345559.

It is an arithmetic number, because the mean of its divisors is an integer number (777693860352).

Almost surely, 2^{20616916635574} is an apocalyptic number.

20616916635574 is a deficient number, since it is larger than the sum of its proper divisors (16712388661322).

20616916635574 is a wasteful number, since it uses less digits than its factorization.

20616916635574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35530841 (or 35530834 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 61.

The spelling of 20616916635574 in words is "twenty trillion, six hundred sixteen billion, nine hundred sixteen million, six hundred thirty-five thousand, five hundred seventy-four".