135551525540 has 24 divisors (see below), whose sum is σ = 284777457720. Its totient is φ = 54197895168.

The previous prime is 135551525539. The next prime is 135551525579. The reversal of 135551525540 is 45525155531.

It can be written as a sum of positive squares in 4 ways, for example, as 1197021604 + 134354503936 = 34598^2 + 366544^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1370717 + ... + 1466276.

It is an arithmetic number, because the mean of its divisors is an integer number (11865727405).

Almost surely, 2^135551525540 is an apocalyptic number.

135551525540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135551525540 is an abundant number, since it is smaller than the sum of its proper divisors (149225932180).

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

135551525540 is a wasteful number, since it uses less digits than its factorization.

135551525540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839391 (or 2839389 counting only the distinct ones).

The product of its (nonzero) digits is 375000, while the sum is 41.

The spelling of 135551525540 in words is "one hundred thirty-five billion, five hundred fifty-one million, five hundred twenty-five thousand, five hundred forty".