12552420540 has 96 divisors (see below), whose sum is σ = 38465070336. Its totient is φ = 3033239040.

The previous prime is 12552420527. The next prime is 12552420541. The reversal of 12552420540 is 4502425521.

It is a super-2 number, since 2×12552420540² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 12552420498 and 12552420507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12552420541) 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, 176199 + ... + 236961.

It is an arithmetic number, because the mean of its divisors is an integer number (400677816).

Almost surely, 2^12552420540 is an apocalyptic number.

12552420540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12552420540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19232535168).

12552420540 is an abundant number, since it is smaller than the sum of its proper divisors (25912649796).

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

12552420540 is a wasteful number, since it uses less digits than its factorization.

12552420540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61099 (or 61097 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 12552420540 in words is "twelve billion, five hundred fifty-two million, four hundred twenty thousand, five hundred forty".