13405641600 has 384 divisors, whose sum is σ = 47915683200. Its totient is φ = 3274629120.

The previous prime is 13405641589. The next prime is 13405641617. The reversal of 13405641600 is 614650431.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×13405641600² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 20342071 + ... + 20342729.

It is an arithmetic number, because the mean of its divisors is an integer number (124780425).

Almost surely, 2^13405641600 is an apocalyptic number.

13405641600 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 13405641600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23957841600).

13405641600 is an abundant number, since it is smaller than the sum of its proper divisors (34510041600).

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

13405641600 is a wasteful number, since it uses less digits than its factorization.

13405641600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 13405641600 in words is "thirteen billion, four hundred five million, six hundred forty-one thousand, six hundred".