135524621659 has 8 divisors (see below), whose sum is σ = 159881581568. Its totient is φ = 112416736680.

The previous prime is 135524621651. The next prime is 135524621699. The reversal of 135524621659 is 956126425531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135524621659 - 2³ = 135524621651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135524621651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312268497 + ... + 312268930.

It is an arithmetic number, because the mean of its divisors is an integer number (19985197696).

Almost surely, 2^135524621659 is an apocalyptic number.

135524621659 is a deficient number, since it is larger than the sum of its proper divisors (24356959909).

135524621659 is an equidigital number, since it uses as much as digits as its factorization.

135524621659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624537465.

The product of its digits is 1944000, while the sum is 49.

The spelling of 135524621659 in words is "one hundred thirty-five billion, five hundred twenty-four million, six hundred twenty-one thousand, six hundred fifty-nine".