13651455444 has 72 divisors (see below), whose sum is σ = 35576708832. Its totient is φ = 4040527680.

The previous prime is 13651455437. The next prime is 13651455463. The reversal of 13651455444 is 44455415631.

It is a junction number, because it is equal to n+sod(n) for n = 13651455396 and 13651455405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216102 + ... + 272034.

It is an arithmetic number, because the mean of its divisors is an integer number (494120956).

Almost surely, 2^13651455444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13651455444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17788354416).

13651455444 is an abundant number, since it is smaller than the sum of its proper divisors (21925253388).

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

13651455444 is a wasteful number, since it uses less digits than its factorization.

13651455444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56037 (or 55992 counting only the distinct ones).

The product of its digits is 576000, while the sum is 42.

The spelling of 13651455444 in words is "thirteen billion, six hundred fifty-one million, four hundred fifty-five thousand, four hundred forty-four".