19695380376 has 128 divisors (see below), whose sum is σ = 56822976000. Its totient is φ = 5572426752.

The previous prime is 19695380359. The next prime is 19695380377. The reversal of 19695380376 is 67308359691.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19695380377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11885340 + ... + 11886996.

It is an arithmetic number, because the mean of its divisors is an integer number (443929500).

Almost surely, 2^19695380376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19695380376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28411488000).

19695380376 is an abundant number, since it is smaller than the sum of its proper divisors (37127595624).

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

19695380376 is a wasteful number, since it uses less digits than its factorization.

19695380376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321 (or 2317 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 57.

The spelling of 19695380376 in words is "nineteen billion, six hundred ninety-five million, three hundred eighty thousand, three hundred seventy-six".