1665313153260 has 48 divisors (see below), whose sum is σ = 4663384058592. Its totient is φ = 444035200000.

The previous prime is 1665313153219. The next prime is 1665313153271. The reversal of 1665313153260 is 623513135661.

It is a happy 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, 951741 + ... + 2058260.

It is an arithmetic number, because the mean of its divisors is an integer number (97153834554).

Almost surely, 2^{1665313153260} is an apocalyptic number.

1665313153260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1665313153260 is an abundant number, since it is smaller than the sum of its proper divisors (2998070905332).

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

1665313153260 is a wasteful number, since it uses less digits than its factorization.

1665313153260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019234 (or 3019232 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 42.

The spelling of 1665313153260 in words is "one trillion, six hundred sixty-five billion, three hundred thirteen million, one hundred fifty-three thousand, two hundred sixty".