661160106006 has 32 divisors (see below), whose sum is σ = 1351616537088. Its totient is φ = 215512049760.

The previous prime is 661160105987. The next prime is 661160106029. The reversal of 661160106006 is 600601061166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 680005 + ... + 1335936.

It is an arithmetic number, because the mean of its divisors is an integer number (42238016784).

Almost surely, 2^661160106006 is an apocalyptic number.

661160106006 is an abundant number, since it is smaller than the sum of its proper divisors (690456431082).

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

661160106006 is a wasteful number, since it uses less digits than its factorization.

661160106006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017156.

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 661160106006 in words is "six hundred sixty-one billion, one hundred sixty million, one hundred six thousand, six".