135803839640 has 64 divisors (see below), whose sum is σ = 352600335360. Its totient is φ = 46109255040.

The previous prime is 135803839631. The next prime is 135803839649. The reversal of 135803839640 is 46938308531.

It is an interprime number because it is at equal distance from previous prime (135803839631) and next prime (135803839649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135803839649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2325596 + ... + 2383275.

It is an arithmetic number, because the mean of its divisors is an integer number (5509380240).

Almost surely, 2^135803839640 is an apocalyptic number.

135803839640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135803839640 is an abundant number, since it is smaller than the sum of its proper divisors (216796495720).

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

135803839640 is a wasteful number, since it uses less digits than its factorization.

135803839640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708992 (or 4708988 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 135803839640 in words is "one hundred thirty-five billion, eight hundred three million, eight hundred thirty-nine thousand, six hundred forty".