20411565363616 has 48 divisors (see below), whose sum is σ = 47509678016640. Its totient is φ = 8446164975360.

The previous prime is 20411565363577. The next prime is 20411565363649. The reversal of 20411565363616 is 61636356511402.

It is a super-3 number, since 3×20411565363616³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20411565363616.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1571080740 + ... + 1571093731.

It is an arithmetic number, because the mean of its divisors is an integer number (989784958680).

Almost surely, 2^{20411565363616} is an apocalyptic number.

It is an amenable number.

20411565363616 is an abundant number, since it is smaller than the sum of its proper divisors (27098112653024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20411565363616 is a wasteful number, since it uses less digits than its factorization.

20411565363616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142174517 (or 3142174509 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 20411565363616 in words is "twenty trillion, four hundred eleven billion, five hundred sixty-five million, three hundred sixty-three thousand, six hundred sixteen".