13656161880 has 192 divisors, whose sum is σ = 48087056160. Its totient is φ = 3347656704.

The previous prime is 13656161861. The next prime is 13656161899. The reversal of 13656161880 is 8816165631.

13656161880 is a `hidden beast` number, since 1 + 3 + 6 + 561 + 6 + 1 + 8 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (13656161861) and next prime (13656161899).

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

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, 237214 + ... + 289106.

Almost surely, 2^13656161880 is an apocalyptic number.

13656161880 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 13656161880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24043528080).

13656161880 is an abundant number, since it is smaller than the sum of its proper divisors (34430894280).

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

13656161880 is a wasteful number, since it uses less digits than its factorization.

13656161880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51970 (or 51963 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 13656161880 in words is "thirteen billion, six hundred fifty-six million, one hundred sixty-one thousand, eight hundred eighty".