20380576554450 has 144 divisors (see below), whose sum is σ = 62719339116096. Its totient is φ = 4647901564800.

The previous prime is 20380576554449. The next prime is 20380576554463. The reversal of 20380576554450 is 5445567508302.

20380576554450 is a `hidden beast` number, since 2 + 0 + 3 + 80 + 5 + 7 + 6 + 554 + 4 + 5 + 0 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5907061 + ... + 8697960.

It is an arithmetic number, because the mean of its divisors is an integer number (435550966084).

Almost surely, 2^{20380576554450} is an apocalyptic number.

20380576554450 is an abundant number, since it is smaller than the sum of its proper divisors (42338762561646).

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

20380576554450 is a wasteful number, since it uses less digits than its factorization.

20380576554450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14605489 (or 14605481 counting only the distinct ones).

The product of its (nonzero) digits is 20160000, while the sum is 54.

The spelling of 20380576554450 in words is "twenty trillion, three hundred eighty billion, five hundred seventy-six million, five hundred fifty-four thousand, four hundred fifty".