12553562840 has 384 divisors, whose sum is σ = 38169169920. Its totient is φ = 3672345600.

The previous prime is 12553562839. The next prime is 12553562869. The reversal of 12553562840 is 4826535521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18166895 + ... + 18167585.

It is an arithmetic number, because the mean of its divisors is an integer number (99398880).

Almost surely, 2^12553562840 is an apocalyptic number.

12553562840 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 12553562840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19084584960).

12553562840 is an abundant number, since it is smaller than the sum of its proper divisors (25615607080).

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

12553562840 is a wasteful number, since it uses less digits than its factorization.

12553562840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 12553562840 in words is "twelve billion, five hundred fifty-three million, five hundred sixty-two thousand, eight hundred forty".