135902252020 has 48 divisors (see below), whose sum is σ = 288302571648. Its totient is φ = 53807529600.

The previous prime is 135902251939. The next prime is 135902252029. The reversal of 135902252020 is 20252209531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135902252029) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4655470 + ... + 4684570.

It is an arithmetic number, because the mean of its divisors is an integer number (6006303576).

Almost surely, 2^135902252020 is an apocalyptic number.

135902252020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135902252020 is an abundant number, since it is smaller than the sum of its proper divisors (152400319628).

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

135902252020 is a wasteful number, since it uses less digits than its factorization.

135902252020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31480 (or 31478 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 135902252020 in words is "one hundred thirty-five billion, nine hundred two million, two hundred fifty-two thousand, twenty".