9912554520 has 128 divisors (see below), whose sum is σ = 32468221440. Its totient is φ = 2401034240.

The previous prime is 9912554501. The next prime is 9912554521. The reversal of 9912554520 is 254552199.

It is a happy number.

It is a super-2 number, since 2×9912554520² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9912554521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2118904 + ... + 2123576.

It is an arithmetic number, because the mean of its divisors is an integer number (253657980).

Almost surely, 2^9912554520 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 9912554520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16234110720).

9912554520 is an abundant number, since it is smaller than the sum of its proper divisors (22555666920).

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

9912554520 is a wasteful number, since it uses less digits than its factorization.

9912554520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6305 (or 6301 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The square root of 9912554520 is about 99561.8125588320. The cubic root of 9912554520 is about 2148.1364432399.

The spelling of 9912554520 in words is "nine billion, nine hundred twelve million, five hundred fifty-four thousand, five hundred twenty".