660990853530 has 96 divisors (see below), whose sum is σ = 1979552600064. Its totient is φ = 149893970688.

The previous prime is 660990853519. The next prime is 660990853583. The reversal of 660990853530 is 35358099066.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4050667 + ... + 4210686.

It is an arithmetic number, because the mean of its divisors is an integer number (20620339584).

Almost surely, 2^660990853530 is an apocalyptic number.

660990853530 is an abundant number, since it is smaller than the sum of its proper divisors (1318561746534).

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

660990853530 is a wasteful number, since it uses less digits than its factorization.

660990853530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8261500 (or 8261497 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 54.

The spelling of 660990853530 in words is "six hundred sixty billion, nine hundred ninety million, eight hundred fifty-three thousand, five hundred thirty".