19119117080 has 128 divisors (see below), whose sum is σ = 54001382400. Its totient is φ = 5940076032.

The previous prime is 19119117053. The next prime is 19119117107. The reversal of 19119117080 is 8071191191.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19119117053) and next prime (19119117107).

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

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, 44234 + ... + 200486.

It is an arithmetic number, because the mean of its divisors is an integer number (421885800).

Almost surely, 2^19119117080 is an apocalyptic number.

19119117080 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 19119117080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27000691200).

19119117080 is an abundant number, since it is smaller than the sum of its proper divisors (34882265320).

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

19119117080 is a wasteful number, since it uses less digits than its factorization.

19119117080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156313 (or 156309 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 38.

The spelling of 19119117080 in words is "nineteen billion, one hundred nineteen million, one hundred seventeen thousand, eighty".