12557640545910 has 384 divisors, whose sum is σ = 34995719416320. Its totient is φ = 3118099525632.

The previous prime is 12557640545843. The next prime is 12557640545951. The reversal of 12557640545910 is 1954504675521.

12557640545910 is a `hidden beast` number, since 1 + 2 + 5 + 5 + 7 + 6 + 4 + 0 + 545 + 91 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8444949187 + ... + 8444950673.

It is an arithmetic number, because the mean of its divisors is an integer number (91134685980).

Almost surely, 2^{12557640545910} is an apocalyptic number.

12557640545910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12557640545910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17497859708160).

12557640545910 is an abundant number, since it is smaller than the sum of its proper divisors (22438078870410).

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

12557640545910 is a wasteful number, since it uses less digits than its factorization.

12557640545910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280 (or 2277 counting only the distinct ones).

The product of its (nonzero) digits is 7560000, while the sum is 54.

The spelling of 12557640545910 in words is "twelve trillion, five hundred fifty-seven billion, six hundred forty million, five hundred forty-five thousand, nine hundred ten".