13553061678 has 96 divisors (see below), whose sum is σ = 32737985280. Its totient is φ = 4024028160.

The previous prime is 13553061659. The next prime is 13553061689. The reversal of 13553061678 is 87616035531.

13553061678 is a `hidden beast` number, since 1 + 35 + 530 + 6 + 16 + 78 = 666.

It is a congruent number.

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, 2703238 + ... + 2708246.

It is an arithmetic number, because the mean of its divisors is an integer number (341020680).

Almost surely, 2^13553061678 is an apocalyptic number.

13553061678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13553061678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16368992640).

13553061678 is an abundant number, since it is smaller than the sum of its proper divisors (19184923602).

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

13553061678 is a wasteful number, since it uses less digits than its factorization.

13553061678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5434 (or 5431 counting only the distinct ones).

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

The spelling of 13553061678 in words is "thirteen billion, five hundred fifty-three million, sixty-one thousand, six hundred seventy-eight".