19999704060 has 384 divisors, whose sum is σ = 77139578880. Its totient is φ = 4196966400.

The previous prime is 19999704059. The next prime is 19999704079. The reversal of 19999704060 is 6040799991.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 19999703988 and 19999704006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2630865 + ... + 2638455.

It is an arithmetic number, because the mean of its divisors is an integer number (200884320).

Almost surely, 2^19999704060 is an apocalyptic number.

19999704060 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 19999704060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38569789440).

19999704060 is an abundant number, since it is smaller than the sum of its proper divisors (57139874820).

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

19999704060 is a wasteful number, since it uses less digits than its factorization.

19999704060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7674 (or 7666 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The spelling of 19999704060 in words is "nineteen billion, nine hundred ninety-nine million, seven hundred four thousand, sixty".