135223502640 has 40 divisors (see below), whose sum is σ = 419192858928. Its totient is φ = 36059600640.

The previous prime is 135223502639. The next prime is 135223502681. The reversal of 135223502640 is 46205322531.

It is a happy number.

135223502640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

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, 281715391 + ... + 281715870.

Almost surely, 2^135223502640 is an apocalyptic number.

135223502640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135223502640 is an abundant number, since it is smaller than the sum of its proper divisors (283969356288).

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

135223502640 is a wasteful number, since it uses less digits than its factorization.

135223502640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563431277 (or 563431271 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The spelling of 135223502640 in words is "one hundred thirty-five billion, two hundred twenty-three million, five hundred two thousand, six hundred forty".