13433535640 has 32 divisors (see below), whose sum is σ = 34543378080. Its totient is φ = 4605783552.

The previous prime is 13433535623. The next prime is 13433535679. The reversal of 13433535640 is 4653533431.

It is a self number, because there is not a number n which added to its sum of digits gives 13433535640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23988177 + ... + 23988736.

It is an arithmetic number, because the mean of its divisors is an integer number (1079480565).

Almost surely, 2^13433535640 is an apocalyptic number.

13433535640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13433535640 is an abundant number, since it is smaller than the sum of its proper divisors (21109842440).

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

13433535640 is a wasteful number, since it uses less digits than its factorization.

13433535640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47976931 (or 47976927 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 37.

The spelling of 13433535640 in words is "thirteen billion, four hundred thirty-three million, five hundred thirty-five thousand, six hundred forty".