19867455048 has 64 divisors (see below), whose sum is σ = 57402000000. Its totient is φ = 5612631552.

The previous prime is 19867455037. The next prime is 19867455061. The reversal of 19867455048 is 84055476891.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649423 + ... + 679326.

It is an arithmetic number, because the mean of its divisors is an integer number (896906250).

Almost surely, 2^19867455048 is an apocalyptic number.

It is an amenable number.

19867455048 is an abundant number, since it is smaller than the sum of its proper divisors (37534544952).

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

19867455048 is a wasteful number, since it uses less digits than its factorization.

19867455048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328854 (or 1328850 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 57.

The spelling of 19867455048 in words is "nineteen billion, eight hundred sixty-seven million, four hundred fifty-five thousand, forty-eight".