19731041696 has 48 divisors (see below), whose sum is σ = 40123496448. Its totient is φ = 9541344000.

The previous prime is 19731041677. The next prime is 19731041719. The reversal of 19731041696 is 69614013791.

It is a self number, because there is not a number n which added to its sum of digits gives 19731041696.

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, 1880561 + ... + 1891023.

It is an arithmetic number, because the mean of its divisors is an integer number (835906176).

Almost surely, 2^19731041696 is an apocalyptic number.

19731041696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19731041696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20061748224).

19731041696 is an abundant number, since it is smaller than the sum of its proper divisors (20392454752).

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

19731041696 is a wasteful number, since it uses less digits than its factorization.

19731041696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12405 (or 12397 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 47.

The spelling of 19731041696 in words is "nineteen billion, seven hundred thirty-one million, forty-one thousand, six hundred ninety-six".