1566278866480 has 40 divisors (see below), whose sum is σ = 3642578244000. Its totient is φ = 626342965248.

The previous prime is 1566278866433. The next prime is 1566278866499. The reversal of 1566278866480 is 846688726651.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2334705 + ... + 2929744.

It is an arithmetic number, because the mean of its divisors is an integer number (91064456100).

Almost surely, 2^{1566278866480} is an apocalyptic number.

1566278866480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1566278866480 is an abundant number, since it is smaller than the sum of its proper divisors (2076299377520).

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

1566278866480 is a wasteful number, since it uses less digits than its factorization.

1566278866480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5268181 (or 5268175 counting only the distinct ones).

The product of its (nonzero) digits is 185794560, while the sum is 67.

The spelling of 1566278866480 in words is "one trillion, five hundred sixty-six billion, two hundred seventy-eight million, eight hundred sixty-six thousand, four hundred eighty".