135400520000 has 70 divisors (see below), whose sum is σ = 335749383618. Its totient is φ = 54160192000.

The previous prime is 135400519997. The next prime is 135400520093. The reversal of 135400520000 is 25004531.

135400520000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 36246067456 + 99154452544 = 190384^2 + 314888^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1652507 + ... + 1732506.

Almost surely, 2^135400520000 is an apocalyptic number.

135400520000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135400520000 is an abundant number, since it is smaller than the sum of its proper divisors (200348863618).

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

135400520000 is an frugal number, since it uses more digits than its factorization.

135400520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385045 (or 3385020 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

Adding to 135400520000 its reverse (25004531), we get a palindrome (135425524531).

The spelling of 135400520000 in words is "one hundred thirty-five billion, four hundred million, five hundred twenty thousand".