19534676520 has 32 divisors (see below), whose sum is σ = 58604029920. Its totient is φ = 5209247040.

The previous prime is 19534676507. The next prime is 19534676521. The reversal of 19534676520 is 2567643591.

It is a self number, because there is not a number n which added to its sum of digits gives 19534676520.

It is not an unprimeable number, because it can be changed into a prime (19534676521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81394366 + ... + 81394605.

It is an arithmetic number, because the mean of its divisors is an integer number (1831375935).

Almost surely, 2^19534676520 is an apocalyptic number.

19534676520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19534676520 is an abundant number, since it is smaller than the sum of its proper divisors (39069353400).

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

19534676520 is a wasteful number, since it uses less digits than its factorization.

19534676520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162788985 (or 162788981 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 19534676520 in words is "nineteen billion, five hundred thirty-four million, six hundred seventy-six thousand, five hundred twenty".