135421650137 has 16 divisors (see below), whose sum is σ = 142152499200. Its totient is φ = 128852352720.

The previous prime is 135421650107. The next prime is 135421650181. The reversal of 135421650137 is 731056124531.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 135421650137 - 2¹⁰ = 135421649113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135421650137.

It is not an unprimeable number, because it can be changed into a prime (135421650107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469628 + ... + 700994.

It is an arithmetic number, because the mean of its divisors is an integer number (8884531200).

Almost surely, 2^135421650137 is an apocalyptic number.

It is an amenable number.

135421650137 is a deficient number, since it is larger than the sum of its proper divisors (6730849063).

135421650137 is a wasteful number, since it uses less digits than its factorization.

135421650137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231716.

The product of its (nonzero) digits is 75600, while the sum is 38.

Adding to 135421650137 its reverse (731056124531), we get a palindrome (866477774668).

The spelling of 135421650137 in words is "one hundred thirty-five billion, four hundred twenty-one million, six hundred fifty thousand, one hundred thirty-seven".