32378387866 has 16 divisors (see below), whose sum is σ = 53178334848. Its totient is φ = 14663138400.

The previous prime is 32378387849. The next prime is 32378387891. The reversal of 32378387866 is 66878387323.

It is a super-2 number, since 2×32378387866² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2709435 + ... + 2721358.

It is an arithmetic number, because the mean of its divisors is an integer number (3323645928).

Almost surely, 2^32378387866 is an apocalyptic number.

32378387866 is a deficient number, since it is larger than the sum of its proper divisors (20799946982).

32378387866 is a wasteful number, since it uses less digits than its factorization.

32378387866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5431077.

The product of its digits is 48771072, while the sum is 61.

The spelling of 32378387866 in words is "thirty-two billion, three hundred seventy-eight million, three hundred eighty-seven thousand, eight hundred sixty-six".