15535553134155 has 16 divisors (see below), whose sum is σ = 26319054721824. Its totient is φ = 7798238435840.

The previous prime is 15535553134151. The next prime is 15535553134253. The reversal of 15535553134155 is 55143135553551.

It is not a de Polignac number, because 15535553134155 - 2² = 15535553134151 is a prime.

It is a super-2 number, since 2×15535553134155² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 15535553134098 and 15535553134107.

It is not an unprimeable number, because it can be changed into a prime (15535553134151) 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 15 ways as a sum of consecutive naturals, for example, 30461868636 + ... + 30461869145.

It is an arithmetic number, because the mean of its divisors is an integer number (1644940920114).

Almost surely, 2^{15535553134155} is an apocalyptic number.

15535553134155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15535553134155 is a deficient number, since it is larger than the sum of its proper divisors (10783501587669).

15535553134155 is a wasteful number, since it uses less digits than its factorization.

15535553134155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60923737806.

The product of its digits is 8437500, while the sum is 51.

The spelling of 15535553134155 in words is "fifteen trillion, five hundred thirty-five billion, five hundred fifty-three million, one hundred thirty-four thousand, one hundred fifty-five".