9409899467780 has 96 divisors (see below), whose sum is σ = 22804804399104. Its totient is φ = 3194678208384.

The previous prime is 9409899467779. The next prime is 9409899467821. The reversal of 9409899467780 is 877649989049.

It is a junction number, because it is equal to n+sod(n) for n = 9409899467695 and 9409899467704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 359376569 + ... + 359402751.

It is an arithmetic number, because the mean of its divisors is an integer number (237550045824).

Almost surely, 2^{9409899467780} 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 9409899467780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11402402199552).

9409899467780 is an abundant number, since it is smaller than the sum of its proper divisors (13394904931324).

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

9409899467780 is a wasteful number, since it uses less digits than its factorization.

9409899467780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51225 (or 51223 counting only the distinct ones).

The product of its (nonzero) digits is 1975228416, while the sum is 80.

The spelling of 9409899467780 in words is "nine trillion, four hundred nine billion, eight hundred ninety-nine million, four hundred sixty-seven thousand, seven hundred eighty".