538165555200 has 3120 divisors, whose sum is σ = 2642793517056. Its totient is φ = 105106636800.

The previous prime is 538165555163. The next prime is 538165555219. The reversal of 538165555200 is 2555561835.

It is a happy number.

538165555200 is a `hidden beast` number, since 5 + 38 + 1 + 65 + 5 + 552 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (3120).

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

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 17360179185 + ... + 17360179215.

Almost surely, 2^538165555200 is an apocalyptic number.

538165555200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538165555200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1321396758528).

538165555200 is an abundant number, since it is smaller than the sum of its proper divisors (2104627961856).

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

538165555200 is a wasteful number, since it uses less digits than its factorization.

538165555200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 45.

The spelling of 538165555200 in words is "five hundred thirty-eight billion, one hundred sixty-five million, five hundred fifty-five thousand, two hundred".