15500434135 has 16 divisors (see below), whose sum is σ = 18746608896. Its totient is φ = 12303056128.

The previous prime is 15500434127. The next prime is 15500434139. The reversal of 15500434135 is 53143400551.

It is a cyclic number.

It is not a de Polignac number, because 15500434135 - 2³ = 15500434127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15500434097 and 15500434106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15500434139) by changing a digit.

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, 1506669 + ... + 1516921.

It is an arithmetic number, because the mean of its divisors is an integer number (1171663056).

Almost surely, 2^15500434135 is an apocalyptic number.

15500434135 is a deficient number, since it is larger than the sum of its proper divisors (3246174761).

15500434135 is a wasteful number, since it uses less digits than its factorization.

15500434135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12602.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 15500434135 its reverse (53143400551), we get a palindrome (68643834686).

The spelling of 15500434135 in words is "fifteen billion, five hundred million, four hundred thirty-four thousand, one hundred thirty-five".