135560621625 has 128 divisors (see below), whose sum is σ = 271476721152. Its totient is φ = 59189760000.

The previous prime is 135560621593. The next prime is 135560621627. The reversal of 135560621625 is 526126065531.

It is not a de Polignac number, because 135560621625 - 2⁵ = 135560621593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135560621627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2167797 + ... + 2229453.

It is an arithmetic number, because the mean of its divisors is an integer number (2120911884).

Almost surely, 2^135560621625 is an apocalyptic number.

135560621625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135560621625 is an abundant number, since it is smaller than the sum of its proper divisors (135916099527).

135560621625 is a wasteful number, since it uses less digits than its factorization.

135560621625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61740 (or 61730 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 135560621625 in words is "one hundred thirty-five billion, five hundred sixty million, six hundred twenty-one thousand, six hundred twenty-five".