1665500022980 has 24 divisors (see below), whose sum is σ = 3582856148760. Its totient is φ = 649951228160.

The previous prime is 1665500022931. The next prime is 1665500023039. The reversal of 1665500022980 is 892200055661.

It can be written as a sum of positive squares in 4 ways, for example, as 266654500996 + 1398845521984 = 516386^2 + 1182728^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1015547975 + ... + 1015549614.

It is an arithmetic number, because the mean of its divisors is an integer number (149285672865).

Almost surely, 2^{1665500022980} is an apocalyptic number.

1665500022980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1665500022980 is an abundant number, since it is smaller than the sum of its proper divisors (1917356125780).

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

1665500022980 is a wasteful number, since it uses less digits than its factorization.

1665500022980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031097639 (or 2031097637 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 1665500022980 in words is "one trillion, six hundred sixty-five billion, five hundred million, twenty-two thousand, nine hundred eighty".