13611152646 has 144 divisors (see below), whose sum is σ = 38558423904. Its totient is φ = 3378475008.

The previous prime is 13611152603. The next prime is 13611152647. The reversal of 13611152646 is 64625111631.

13611152646 is a `hidden beast` number, since 1 + 3 + 6 + 1 + 1 + 1 + 5 + 2 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 13611152646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13611152647) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 459006 + ... + 487758.

Almost surely, 2^13611152646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13611152646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19279211952).

13611152646 is an abundant number, since it is smaller than the sum of its proper divisors (24947271258).

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

13611152646 is a wasteful number, since it uses less digits than its factorization.

13611152646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28815 (or 28795 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The spelling of 13611152646 in words is "thirteen billion, six hundred eleven million, one hundred fifty-two thousand, six hundred forty-six".