661110610170 has 32 divisors (see below), whose sum is σ = 1589341165632. Its totient is φ = 175998862592.

The previous prime is 661110610163. The next prime is 661110610201. The reversal of 661110610170 is 71016011166.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 18563172 + ... + 18598751.

It is an arithmetic number, because the mean of its divisors is an integer number (49666911426).

Almost surely, 2^661110610170 is an apocalyptic number.

661110610170 is an abundant number, since it is smaller than the sum of its proper divisors (928230555462).

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

661110610170 is a wasteful number, since it uses less digits than its factorization.

661110610170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37162526.

The product of its (nonzero) digits is 1512, while the sum is 30.

The spelling of 661110610170 in words is "six hundred sixty-one billion, one hundred ten million, six hundred ten thousand, one hundred seventy".