135203714646 has 128 divisors (see below), whose sum is σ = 365294555136. Its totient is φ = 32217367680.

The previous prime is 135203714627. The next prime is 135203714663. The reversal of 135203714646 is 646417302531.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 135203714598 and 135203714607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 909925 + ... + 1048031.

It is an arithmetic number, because the mean of its divisors is an integer number (2853863712).

Almost surely, 2^135203714646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135203714646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182647277568).

135203714646 is an abundant number, since it is smaller than the sum of its proper divisors (230090840490).

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

135203714646 is a wasteful number, since it uses less digits than its factorization.

135203714646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138306.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 135203714646 in words is "one hundred thirty-five billion, two hundred three million, seven hundred fourteen thousand, six hundred forty-six".