537882768666 has 24 divisors (see below), whose sum is σ = 1184517793524. Its totient is φ = 176355005760.

The previous prime is 537882768607. The next prime is 537882768673. The reversal of 537882768666 is 666867288735.

It can be written as a sum of positive squares in 2 ways, for example, as 374966399025 + 162916369641 = 612345^2 + 403629^2 .

It is a junction number, because it is equal to n+sod(n) for n = 537882768594 and 537882768603.

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 11 ways as a sum of consecutive naturals, for example, 244936411 + ... + 244938606.

Almost surely, 2^537882768666 is an apocalyptic number.

537882768666 is an abundant number, since it is smaller than the sum of its proper divisors (646635024858).

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

537882768666 is a wasteful number, since it uses less digits than its factorization.

537882768666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489875086 (or 489875083 counting only the distinct ones).

The product of its digits is 975421440, while the sum is 72.

The spelling of 537882768666 in words is "five hundred thirty-seven billion, eight hundred eighty-two million, seven hundred sixty-eight thousand, six hundred sixty-six".