9712491712 has 112 divisors (see below), whose sum is σ = 24678851328. Its totient is φ = 3681745920.

The previous prime is 9712491667. The next prime is 9712491713. The reversal of 9712491712 is 2171942179.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (9712491713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155703 + ... + 208969.

Almost surely, 2^9712491712 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 9712491712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12339425664).

9712491712 is an abundant number, since it is smaller than the sum of its proper divisors (14966359616).

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

9712491712 is a wasteful number, since it uses less digits than its factorization.

9712491712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53334 (or 53324 counting only the distinct ones).

The product of its digits is 63504, while the sum is 43.

The square root of 9712491712 is about 98551.9746732657. The cubic root of 9712491712 is about 2133.5863312798.

The spelling of 9712491712 in words is "nine billion, seven hundred twelve million, four hundred ninety-one thousand, seven hundred twelve".