19695519528 has 128 divisors (see below), whose sum is σ = 52986286080. Its totient is φ = 6086263040.

The previous prime is 19695519523. The next prime is 19695519553. The reversal of 19695519528 is 82591559691.

It is not an unprimeable number, because it can be changed into a prime (19695519523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2424193 + ... + 2432303.

It is an arithmetic number, because the mean of its divisors is an integer number (413955360).

Almost surely, 2^19695519528 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 19695519528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26493143040).

19695519528 is an abundant number, since it is smaller than the sum of its proper divisors (33290766552).

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

19695519528 is a wasteful number, since it uses less digits than its factorization.

19695519528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8279 (or 8275 counting only the distinct ones).

The product of its digits is 8748000, while the sum is 60.

The spelling of 19695519528 in words is "nineteen billion, six hundred ninety-five million, five hundred nineteen thousand, five hundred twenty-eight".