660760426826448 has 160 divisors (see below), whose sum is σ = 1845613076952960. Its totient is φ = 202500256573440.

The previous prime is 660760426826431. The next prime is 660760426826459. The reversal of 660760426826448 is 844628624067066.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 160582090 + ... + 164645462.

It is an arithmetic number, because the mean of its divisors is an integer number (11535081730956).

Almost surely, 2^{660760426826448} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660760426826448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (922806538476480).

660760426826448 is an abundant number, since it is smaller than the sum of its proper divisors (1184852650126512).

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

660760426826448 is a wasteful number, since it uses less digits than its factorization.

660760426826448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064437 (or 4064431 counting only the distinct ones).

The product of its (nonzero) digits is 891813888, while the sum is 69.

The spelling of 660760426826448 in words is "six hundred sixty trillion, seven hundred sixty billion, four hundred twenty-six million, eight hundred twenty-six thousand, four hundred forty-eight".