135523021300 has 36 divisors (see below), whose sum is σ = 294684014016. Its totient is φ = 54098783200.

The previous prime is 135523021297. The next prime is 135523021301. The reversal of 135523021300 is 3120325531.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135523021301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1330972 + ... + 1429171.

It is an arithmetic number, because the mean of its divisors is an integer number (8185667056).

Almost surely, 2^135523021300 is an apocalyptic number.

135523021300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135523021300 is an abundant number, since it is smaller than the sum of its proper divisors (159160992716).

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

135523021300 is a wasteful number, since it uses less digits than its factorization.

135523021300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760648 (or 2760641 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 135523021300 its reverse (3120325531), we get a palindrome (138643346831).

The spelling of 135523021300 in words is "one hundred thirty-five billion, five hundred twenty-three million, twenty-one thousand, three hundred".