135520142450 has 48 divisors (see below), whose sum is σ = 314265939264. Its totient is φ = 42240043200.

The previous prime is 135520142423. The next prime is 135520142521. The reversal of 135520142450 is 54241025531.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17596169 + ... + 17603868.

It is an arithmetic number, because the mean of its divisors is an integer number (6547207068).

Almost surely, 2^135520142450 is an apocalyptic number.

135520142450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135520142450 is an abundant number, since it is smaller than the sum of its proper divisors (178745796814).

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

135520142450 is a wasteful number, since it uses less digits than its factorization.

135520142450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35200067 (or 35200062 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 135520142450 its reverse (54241025531), we get a palindrome (189761167981).

The spelling of 135520142450 in words is "one hundred thirty-five billion, five hundred twenty million, one hundred forty-two thousand, four hundred fifty".