19867767048 has 128 divisors (see below), whose sum is σ = 55705968000. Its totient is φ = 6560766720.

The previous prime is 19867767013. The next prime is 19867767053. The reversal of 19867767048 is 84076776891.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12255678 + ... + 12257298.

It is an arithmetic number, because the mean of its divisors is an integer number (435202875).

Almost surely, 2^19867767048 is an apocalyptic number.

19867767048 is a gapful number since it is divisible by the number (18) 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 19867767048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27852984000).

19867767048 is an abundant number, since it is smaller than the sum of its proper divisors (35838200952).

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

19867767048 is a wasteful number, since it uses less digits than its factorization.

19867767048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132 (or 2122 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 63.

The spelling of 19867767048 in words is "nineteen billion, eight hundred sixty-seven million, seven hundred sixty-seven thousand, forty-eight".