9121631363712 has 512 divisors, whose sum is σ = 32472817920000. Its totient is φ = 2462451425280.

The previous prime is 9121631363671. The next prime is 9121631363717. The reversal of 9121631363712 is 2173631361219.

9121631363712 is a `hidden beast` number, since 9 + 1 + 2 + 1 + 6 + 3 + 1 + 3 + 637 + 1 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (9121631363717) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 174180412 + ... + 174232772.

It is an arithmetic number, because the mean of its divisors is an integer number (63423472500).

Almost surely, 2^{9121631363712} 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 9121631363712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16236408960000).

9121631363712 is an abundant number, since it is smaller than the sum of its proper divisors (23351186556288).

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

9121631363712 is a wasteful number, since it uses less digits than its factorization.

9121631363712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52789 (or 52771 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The spelling of 9121631363712 in words is "nine trillion, one hundred twenty-one billion, six hundred thirty-one million, three hundred sixty-three thousand, seven hundred twelve".