19415866680 has 768 divisors, whose sum is σ = 79744204800. Its totient is φ = 3997486080.

The previous prime is 19415866663. The next prime is 19415866697. The reversal of 19415866680 is 8666851491.

It is an interprime number because it is at equal distance from previous prime (19415866663) and next prime (19415866697).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 152880777 + ... + 152880903.

It is an arithmetic number, because the mean of its divisors is an integer number (103833600).

Almost surely, 2^19415866680 is an apocalyptic number.

19415866680 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 19415866680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39872102400).

19415866680 is an abundant number, since it is smaller than the sum of its proper divisors (60328338120).

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

19415866680 is a wasteful number, since it uses less digits than its factorization.

19415866680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 19415866680 in words is "nineteen billion, four hundred fifteen million, eight hundred sixty-six thousand, six hundred eighty".