15505545775105 has 64 divisors (see below), whose sum is σ = 20586435379200. Its totient is φ = 11173108826880.

The previous prime is 15505545775103. The next prime is 15505545775193. The reversal of 15505545775105 is 50157754550551.

It is a happy number.

It is not a de Polignac number, because 15505545775105 - 2¹ = 15505545775103 is a prime.

It is a super-2 number, since 2×15505545775105² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15505545775103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24678910 + ... + 25299400.

It is an arithmetic number, because the mean of its divisors is an integer number (321663052800).

Almost surely, 2^{15505545775105} is an apocalyptic number.

It is an amenable number.

15505545775105 is a deficient number, since it is larger than the sum of its proper divisors (5080889604095).

15505545775105 is a wasteful number, since it uses less digits than its factorization.

15505545775105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620734.

The product of its (nonzero) digits is 15312500, while the sum is 55.

The spelling of 15505545775105 in words is "fifteen trillion, five hundred five billion, five hundred forty-five million, seven hundred seventy-five thousand, one hundred five".