660101054905 has 16 divisors (see below), whose sum is σ = 807112005264. Its totient is φ = 518088130560.

The previous prime is 660101054903. The next prime is 660101054911. The reversal of 660101054905 is 509450101066.

It can be written as a sum of positive squares in 8 ways, for example, as 77155061824 + 582945993081 = 277768^2 + 763509^2 .

It is not a de Polignac number, because 660101054905 - 2¹ = 660101054903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660101054903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5538097 + ... + 5656033.

It is an arithmetic number, because the mean of its divisors is an integer number (50444500329).

Almost surely, 2^660101054905 is an apocalyptic number.

It is an amenable number.

660101054905 is a deficient number, since it is larger than the sum of its proper divisors (147010950359).

660101054905 is a wasteful number, since it uses less digits than its factorization.

660101054905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139116.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 660101054905 in words is "six hundred sixty billion, one hundred one million, fifty-four thousand, nine hundred five".