9997507487430 has 128 divisors (see below), whose sum is σ = 27542661672960. Its totient is φ = 2577879336960.

The previous prime is 9997507487417. The next prime is 9997507487441. The reversal of 9997507487430 is 347847057999.

9997507487430 is a `hidden beast` number, since 9 + 9 + 9 + 7 + 507 + 4 + 87 + 4 + 30 = 666.

It is a super-2 number, since 2×9997507487430² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9695557 + ... + 10677023.

It is an arithmetic number, because the mean of its divisors is an integer number (215177044320).

Almost surely, 2^{9997507487430} is an apocalyptic number.

9997507487430 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9997507487430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13771330836480).

9997507487430 is an abundant number, since it is smaller than the sum of its proper divisors (17545154185530).

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

9997507487430 is a wasteful number, since it uses less digits than its factorization.

9997507487430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982731 (or 982725 counting only the distinct ones).

The product of its (nonzero) digits is 480090240, while the sum is 72.

The spelling of 9997507487430 in words is "nine trillion, nine hundred ninety-seven billion, five hundred seven million, four hundred eighty-seven thousand, four hundred thirty".