660645331035045 has 32 divisors (see below), whose sum is σ = 1134974447781120. Its totient is φ = 326947371770880.

The previous prime is 660645331034989. The next prime is 660645331035091. The reversal of 660645331035045 is 540530133546066.

It is not a de Polignac number, because 660645331035045 - 2⁶ = 660645331034981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18244812910 + ... + 18244849119.

It is an arithmetic number, because the mean of its divisors is an integer number (35467951493160).

Almost surely, 2^{660645331035045} is an apocalyptic number.

It is an amenable number.

660645331035045 is a deficient number, since it is larger than the sum of its proper divisors (474329116746075).

660645331035045 is a wasteful number, since it uses less digits than its factorization.

660645331035045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36489662125.

The product of its (nonzero) digits is 11664000, while the sum is 51.

The spelling of 660645331035045 in words is "six hundred sixty trillion, six hundred forty-five billion, three hundred thirty-one million, thirty-five thousand, forty-five".