660788097528 has 64 divisors (see below), whose sum is σ = 1816896936960. Its totient is φ = 198993465216.

The previous prime is 660788097467. The next prime is 660788097539. The reversal of 660788097528 is 825790887066.

It is a congruent number.

It is an unprimeable number.

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, 22516300 + ... + 22545627.

It is an arithmetic number, because the mean of its divisors is an integer number (28389014640).

Almost surely, 2^660788097528 is an apocalyptic number.

It is an amenable number.

660788097528 is an abundant number, since it is smaller than the sum of its proper divisors (1156108839432).

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

660788097528 is a wasteful number, since it uses less digits than its factorization.

660788097528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45061996 (or 45061992 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 66.

The spelling of 660788097528 in words is "six hundred sixty billion, seven hundred eighty-eight million, ninety-seven thousand, five hundred twenty-eight".