9999939810480 has 160 divisors (see below), whose sum is σ = 32350394870784. Its totient is φ = 2550491378688.

The previous prime is 9999939810479. The next prime is 9999939810527. The reversal of 9999939810480 is 840189399999.

It is a junction number, because it is equal to n+sod(n) for n = 9999939810396 and 9999939810405.

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, 70347637 + ... + 70489643.

Almost surely, 2^{9999939810480} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9999939810480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16175197435392).

9999939810480 is an abundant number, since it is smaller than the sum of its proper divisors (22350455060304).

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

9999939810480 is a wasteful number, since it uses less digits than its factorization.

9999939810480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154803 (or 154797 counting only the distinct ones).

The product of its (nonzero) digits is 408146688, while the sum is 78.

The spelling of 9999939810480 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred thirty-nine million, eight hundred ten thousand, four hundred eighty".