206525542146 has 64 divisors (see below), whose sum is σ = 515463975936. Its totient is φ = 53591832000.

The previous prime is 206525542121. The next prime is 206525542147. The reversal of 206525542146 is 641245525602.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 206525542098 and 206525542107.

It is not an unprimeable number, because it can be changed into a prime (206525542147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 272896 + ... + 698228.

It is an arithmetic number, because the mean of its divisors is an integer number (8054124624).

Almost surely, 2^206525542146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206525542146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257731987968).

206525542146 is an abundant number, since it is smaller than the sum of its proper divisors (308938433790).

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

206525542146 is a wasteful number, since it uses less digits than its factorization.

206525542146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426407.

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 206525542146 in words is "two hundred six billion, five hundred twenty-five million, five hundred forty-two thousand, one hundred forty-six".