13545881280 has 672 divisors, whose sum is σ = 52493875200. Its totient is φ = 3189694464.

The previous prime is 13545881249. The next prime is 13545881281. The reversal of 13545881280 is 8218854531.

13545881280 is a `hidden beast` number, since 1 + 3 + 54 + 588 + 12 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (13545881281) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 59152206 + ... + 59152434.

Almost surely, 2^13545881280 is an apocalyptic number.

13545881280 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 13545881280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26246937600).

13545881280 is an abundant number, since it is smaller than the sum of its proper divisors (38947993920).

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

13545881280 is a wasteful number, since it uses less digits than its factorization.

13545881280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 45.

The spelling of 13545881280 in words is "thirteen billion, five hundred forty-five million, eight hundred eighty-one thousand, two hundred eighty".