10399999999980 has 192 divisors, whose sum is σ = 29670926745600. Its totient is φ = 2721325701120.

The previous prime is 10399999999979. The next prime is 10400000000009. The reversal of 10399999999980 is 8999999999301.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1080065806 + ... + 1080075434.

It is an arithmetic number, because the mean of its divisors is an integer number (154536076800).

Almost surely, 2^{10399999999980} is an apocalyptic number.

10399999999980 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 10399999999980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14835463372800).

10399999999980 is an abundant number, since it is smaller than the sum of its proper divisors (19270926745620).

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

10399999999980 is a wasteful number, since it uses less digits than its factorization.

10399999999980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11104 (or 11102 counting only the distinct ones).

The product of its (nonzero) digits is 9298091736, while the sum is 93.

The spelling of 10399999999980 in words is "ten trillion, three hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty".