1966875623646 has 16 divisors (see below), whose sum is σ = 3934539160464. Its totient is φ = 655493889024.

The previous prime is 1966875623633. The next prime is 1966875623689. The reversal of 1966875623646 is 6463265786691.

It is a congruent number.

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, 32797261 + ... + 32857176.

It is an arithmetic number, because the mean of its divisors is an integer number (245908697529).

Almost surely, 2^{1966875623646} is an apocalyptic number.

1966875623646 is an abundant number, since it is smaller than the sum of its proper divisors (1967663536818).

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

1966875623646 is a wasteful number, since it uses less digits than its factorization.

1966875623646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65659435.

The product of its digits is 470292480, while the sum is 69.

The spelling of 1966875623646 in words is "one trillion, nine hundred sixty-six billion, eight hundred seventy-five million, six hundred twenty-three thousand, six hundred forty-six".