200105145502542 has 48 divisors (see below), whose sum is σ = 495499434797952. Its totient is φ = 57172785722640.

The previous prime is 200105145502513. The next prime is 200105145502543. The reversal of 200105145502542 is 245205541501002.

200105145502542 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 0 + 5 + 145 + 502 + 5 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 200105145502497 and 200105145502506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200105145502543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78643173 + ... + 81147759.

It is an arithmetic number, because the mean of its divisors is an integer number (10322904891624).

Almost surely, 2^{200105145502542} is an apocalyptic number.

200105145502542 is an abundant number, since it is smaller than the sum of its proper divisors (295394289295410).

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

200105145502542 is a wasteful number, since it uses less digits than its factorization.

200105145502542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138693 (or 3138690 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 200105145502542 in words is "two hundred trillion, one hundred five billion, one hundred forty-five million, five hundred two thousand, five hundred forty-two".