661105101610 has 48 divisors (see below), whose sum is σ = 1250928735840. Its totient is φ = 251531102240.

The previous prime is 661105101607. The next prime is 661105101649. The reversal of 661105101610 is 16101501166.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 597825 + ... + 1295995.

It is an arithmetic number, because the mean of its divisors is an integer number (26061015330).

Almost surely, 2^661105101610 is an apocalyptic number.

661105101610 is a deficient number, since it is larger than the sum of its proper divisors (589823634230).

661105101610 is a wasteful number, since it uses less digits than its factorization.

661105101610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698403 (or 698380 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 28.

Adding to 661105101610 its reverse (16101501166), we get a palindrome (677206602776).

The spelling of 661105101610 in words is "six hundred sixty-one billion, one hundred five million, one hundred one thousand, six hundred ten".