19266055020 has 144 divisors (see below), whose sum is σ = 59903651808. Its totient is φ = 5010508800.

The previous prime is 19266055009. The next prime is 19266055031. The reversal of 19266055020 is 2055066291.

19266055020 is a `hidden beast` number, since 1 + 9 + 26 + 60 + 550 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (19266055009) and next prime (19266055031).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1210152 + ... + 1225968.

It is an arithmetic number, because the mean of its divisors is an integer number (415997582).

Almost surely, 2^19266055020 is an apocalyptic number.

19266055020 is a gapful number since it is divisible by the number (10) 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 19266055020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29951825904).

19266055020 is an abundant number, since it is smaller than the sum of its proper divisors (40637596788).

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

19266055020 is a wasteful number, since it uses less digits than its factorization.

19266055020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16000 (or 15995 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 19266055020 in words is "nineteen billion, two hundred sixty-six million, fifty-five thousand, twenty".