135524621660 has 48 divisors (see below), whose sum is σ = 288403839360. Its totient is φ = 53486584320.

The previous prime is 135524621651. The next prime is 135524621699. The reversal of 135524621660 is 66126425531.

It is a happy number.

It is a super-2 number, since 2×135524621660² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2311022 + ... + 2368938.

It is an arithmetic number, because the mean of its divisors is an integer number (6008413320).

Almost surely, 2^135524621660 is an apocalyptic number.

135524621660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135524621660 is an abundant number, since it is smaller than the sum of its proper divisors (152879217700).

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

135524621660 is a wasteful number, since it uses less digits than its factorization.

135524621660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59486 (or 59484 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 135524621660 in words is "one hundred thirty-five billion, five hundred twenty-four million, six hundred twenty-one thousand, six hundred sixty".