660500105061 has 4 divisors (see below), whose sum is σ = 880666806752. Its totient is φ = 440333403372.

The previous prime is 660500105029. The next prime is 660500105071. The reversal of 660500105061 is 160501005066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 660500105061 - 2⁵ = 660500105029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660500105021) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 110083350841 + ... + 110083350846.

It is an arithmetic number, because the mean of its divisors is an integer number (220166701688).

Almost surely, 2^660500105061 is an apocalyptic number.

It is an amenable number.

660500105061 is a deficient number, since it is larger than the sum of its proper divisors (220166701691).

660500105061 is a wasteful number, since it uses less digits than its factorization.

660500105061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220166701690.

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 660500105061 in words is "six hundred sixty billion, five hundred million, one hundred five thousand, sixty-one".