135400505250 has 32 divisors (see below), whose sum is σ = 337959662976. Its totient is φ = 36106801200.

The previous prime is 135400505197. The next prime is 135400505263. The reversal of 135400505250 is 52505004531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90266254 + ... + 90267753.

It is an arithmetic number, because the mean of its divisors is an integer number (10561239468).

Almost surely, 2^135400505250 is an apocalyptic number.

135400505250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135400505250 is an abundant number, since it is smaller than the sum of its proper divisors (202559157726).

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

135400505250 is a wasteful number, since it uses less digits than its factorization.

135400505250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180534027 (or 180534017 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

Adding to 135400505250 its reverse (52505004531), we get a palindrome (187905509781).

The spelling of 135400505250 in words is "one hundred thirty-five billion, four hundred million, five hundred five thousand, two hundred fifty".