9999908522670 has 512 divisors, whose sum is σ = 28082073212928. Its totient is φ = 2256629760000.

The previous prime is 9999908522647. The next prime is 9999908522677. The reversal of 9999908522670 is 762258099999.

9999908522670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

9999908522670 is a nontrivial binomial coefficient, being equal to C(4472116, 2).

It is a junction number, because it is equal to n+sod(n) for n = 9999908522592 and 9999908522601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999908522677) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 9424983940 + ... + 9424985000.

It is an arithmetic number, because the mean of its divisors is an integer number (54847799244).

Almost surely, 2^{9999908522670} is an apocalyptic number.

9999908522670 is the 4472115-th triangular number and also the 2236058-th hexagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9999908522670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14041036606464).

9999908522670 is an abundant number, since it is smaller than the sum of its proper divisors (18082164690258).

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

9999908522670 is a wasteful number, since it uses less digits than its factorization.

9999908522670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508.

The product of its (nonzero) digits is 396809280, while the sum is 75.

It can be divided in two parts, 9999908 and 522670, that added together give a triangular number (10522578 = T₄₅₈₇).

The spelling of 9999908522670 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred eight million, five hundred twenty-two thousand, six hundred seventy".