19944851676 has 24 divisors (see below), whose sum is σ = 46596401040. Its totient is φ = 6639939072.

The previous prime is 19944851671. The next prime is 19944851687. The reversal of 19944851676 is 67615844991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19944851671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1033141 + ... + 1052268.

It is an arithmetic number, because the mean of its divisors is an integer number (1941516710).

Almost surely, 2^19944851676 is an apocalyptic number.

It is an amenable number.

19944851676 is an abundant number, since it is smaller than the sum of its proper divisors (26651549364).

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

19944851676 is a wasteful number, since it uses less digits than its factorization.

19944851676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086213 (or 2086211 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 60.

The spelling of 19944851676 in words is "nineteen billion, nine hundred forty-four million, eight hundred fifty-one thousand, six hundred seventy-six".