19368017040 has 240 divisors, whose sum is σ = 65512896192. Its totient is φ = 4728987648.

The previous prime is 19368016981. The next prime is 19368017051. The reversal of 19368017040 is 4071086391.

It is a tau number, because it is divible by the number of its divisors (240).

It is a self number, because there is not a number n which added to its sum of digits gives 19368017040.

It is a congruent number.

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, 2562547 + ... + 2570093.

Almost surely, 2^19368017040 is an apocalyptic number.

19368017040 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 19368017040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32756448096).

19368017040 is an abundant number, since it is smaller than the sum of its proper divisors (46144879152).

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

19368017040 is a wasteful number, since it uses less digits than its factorization.

19368017040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7634 (or 7611 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 19368017040 in words is "nineteen billion, three hundred sixty-eight million, seventeen thousand, forty".