135385171640 has 16 divisors (see below), whose sum is σ = 304616636280. Its totient is φ = 54154068640.

The previous prime is 135385171633. The next prime is 135385171661. The reversal of 135385171640 is 46171583531.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 135385171591 and 135385171600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1692314606 + ... + 1692314685.

Almost surely, 2^135385171640 is an apocalyptic number.

135385171640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135385171640 is an abundant number, since it is smaller than the sum of its proper divisors (169231464640).

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

135385171640 is a wasteful number, since it uses less digits than its factorization.

135385171640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384629302 (or 3384629298 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 135385171640 in words is "one hundred thirty-five billion, three hundred eighty-five million, one hundred seventy-one thousand, six hundred forty".