13553879040 has 576 divisors, whose sum is σ = 52587662400. Its totient is φ = 3328376832.

The previous prime is 13553879033. The next prime is 13553879057. The reversal of 13553879040 is 4097835531.

13553879040 is a `hidden beast` number, since 1 + 3 + 5 + 538 + 79 + 0 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32347951 + ... + 32348369.

It is an arithmetic number, because the mean of its divisors is an integer number (91298025).

Almost surely, 2^13553879040 is an apocalyptic number.

13553879040 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 13553879040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26293831200).

13553879040 is an abundant number, since it is smaller than the sum of its proper divisors (39033783360).

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

13553879040 is an equidigital number, since it uses as much as digits as its factorization.

13553879040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 13553879040 in words is "thirteen billion, five hundred fifty-three million, eight hundred seventy-nine thousand, forty".