20116363256550 has 72 divisors (see below), whose sum is σ = 58959231959160. Its totient is φ = 4876694121600.

The previous prime is 20116363256497. The next prime is 20116363256551. The reversal of 20116363256550 is 5565236361102.

20116363256550 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 6 + 3 + 6 + 32 + 565 + 50 = 666.

It is a super-2 number, since 2×20116363256550² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 20116363256496 and 20116363256505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20116363256551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2031950935 + ... + 2031960834.

It is an arithmetic number, because the mean of its divisors is an integer number (818878221655).

Almost surely, 2^{20116363256550} is an apocalyptic number.

20116363256550 is an abundant number, since it is smaller than the sum of its proper divisors (38842868702610).

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

20116363256550 is a wasteful number, since it uses less digits than its factorization.

20116363256550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4063911798 (or 4063911790 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The spelling of 20116363256550 in words is "twenty trillion, one hundred sixteen billion, three hundred sixty-three million, two hundred fifty-six thousand, five hundred fifty".