206146355154 has 64 divisors (see below), whose sum is σ = 436060800000. Its totient is φ = 64789198272.

The previous prime is 206146355153. The next prime is 206146355171. The reversal of 206146355154 is 451553641602.

It is not an unprimeable number, because it can be changed into a prime (206146355153) 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, 27486097 + ... + 27493595.

It is an arithmetic number, because the mean of its divisors is an integer number (6813450000).

Almost surely, 2^206146355154 is an apocalyptic number.

206146355154 is an abundant number, since it is smaller than the sum of its proper divisors (229914444846).

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

206146355154 is a wasteful number, since it uses less digits than its factorization.

206146355154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8639.

The product of its (nonzero) digits is 432000, while the sum is 42.

Adding to 206146355154 its reverse (451553641602), we get a palindrome (657699996756).

The spelling of 206146355154 in words is "two hundred six billion, one hundred forty-six million, three hundred fifty-five thousand, one hundred fifty-four".