9911111374080 has 1728 divisors, whose sum is σ = 41607374635008. Its totient is φ = 2212255825920.

The previous prime is 9911111374063. The next prime is 9911111374081. The reversal of 9911111374080 is 804731111199.

9911111374080 is a `hidden beast` number, since 9 + 91 + 1 + 111 + 374 + 0 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (1728).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9911111374081) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 20185562635 + ... + 20185563125.

Almost surely, 2^{9911111374080} is an apocalyptic number.

9911111374080 is a gapful number since it is divisible by the number (90) 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 9911111374080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20803687317504).

9911111374080 is an abundant number, since it is smaller than the sum of its proper divisors (31696263260928).

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

9911111374080 is a wasteful number, since it uses less digits than its factorization.

9911111374080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 45.

The spelling of 9911111374080 in words is "nine trillion, nine hundred eleven billion, one hundred eleven million, three hundred seventy-four thousand, eighty".