13649573760 has 128 divisors (see below), whose sum is σ = 43675061760. Its totient is φ = 3625912320.

The previous prime is 13649573759. The next prime is 13649573771. The reversal of 13649573760 is 6737594631.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 491445 + ... + 518475.

It is an arithmetic number, because the mean of its divisors is an integer number (341211420).

Almost surely, 2^13649573760 is an apocalyptic number.

13649573760 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 13649573760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21837530880).

13649573760 is an abundant number, since it is smaller than the sum of its proper divisors (30025488000).

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

13649573760 is a wasteful number, since it uses less digits than its factorization.

13649573760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27316 (or 27304 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 51.

The spelling of 13649573760 in words is "thirteen billion, six hundred forty-nine million, five hundred seventy-three thousand, seven hundred sixty".