561200543154 has 64 divisors (see below), whose sum is σ = 1253782212480. Its totient is φ = 186067445760.

The previous prime is 561200543153. The next prime is 561200543173. The reversal of 561200543154 is 451345002165.

561200543154 is a `hidden beast` number, since 5 + 61 + 2 + 0 + 0 + 543 + 1 + 54 = 666.

It is not an unprimeable number, because it can be changed into a prime (561200543153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19959634 + ... + 19987730.

It is an arithmetic number, because the mean of its divisors is an integer number (19590347070).

Almost surely, 2^561200543154 is an apocalyptic number.

561200543154 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

561200543154 is an abundant number, since it is smaller than the sum of its proper divisors (692581669326).

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

561200543154 is a wasteful number, since it uses less digits than its factorization.

561200543154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30072 (or 30066 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 561200543154 in words is "five hundred sixty-one billion, two hundred million, five hundred forty-three thousand, one hundred fifty-four".