205601646066142 has 16 divisors (see below), whose sum is σ = 316099154257920. Its totient is φ = 100262700476568.

The previous prime is 205601646066097. The next prime is 205601646066191. The reversal of 205601646066142 is 241660646106502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6859775688 + ... + 6859805659.

It is an arithmetic number, because the mean of its divisors is an integer number (19756197141120).

Almost surely, 2^{205601646066142} is an apocalyptic number.

205601646066142 is a deficient number, since it is larger than the sum of its proper divisors (110497508191778).

205601646066142 is a wasteful number, since it uses less digits than its factorization.

205601646066142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13719581535.

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 205601646066142 in words is "two hundred five trillion, six hundred one billion, six hundred forty-six million, sixty-six thousand, one hundred forty-two".