1659215485380 has 48 divisors (see below), whose sum is σ = 4648286732544. Its totient is φ = 442220951040.

The previous prime is 1659215485337. The next prime is 1659215485381. The reversal of 1659215485380 is 835845129561.

It is a self number, because there is not a number n which added to its sum of digits gives 1659215485380.

It is not an unprimeable number, because it can be changed into a prime (1659215485381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7277797 + ... + 7502316.

It is an arithmetic number, because the mean of its divisors is an integer number (96839306928).

Almost surely, 2^{1659215485380} is an apocalyptic number.

1659215485380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1659215485380 is an abundant number, since it is smaller than the sum of its proper divisors (2989071247164).

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

1659215485380 is a wasteful number, since it uses less digits than its factorization.

1659215485380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14781996 (or 14781994 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 57.

The spelling of 1659215485380 in words is "one trillion, six hundred fifty-nine billion, two hundred fifteen million, four hundred eighty-five thousand, three hundred eighty".