105105551050505 has 32 divisors (see below), whose sum is σ = 128331898865664. Its totient is φ = 82622959981056.

The previous prime is 105105551050483. The next prime is 105105551050523. The reversal of 105105551050505 is 505050155501501.

It is a cyclic number.

It is not a de Polignac number, because 105105551050505 - 2¹² = 105105551046409 is a prime.

It is a super-2 number, since 2×105105551050505² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 874194824 + ... + 874315046.

It is an arithmetic number, because the mean of its divisors is an integer number (4010371839552).

Almost surely, 2^{105105551050505} is an apocalyptic number.

It is an amenable number.

105105551050505 is a deficient number, since it is larger than the sum of its proper divisors (23226347815159).

105105551050505 is a wasteful number, since it uses less digits than its factorization.

105105551050505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129225.

The product of its (nonzero) digits is 78125, while the sum is 38.

The spelling of 105105551050505 in words is "one hundred five trillion, one hundred five billion, five hundred fifty-one million, fifty thousand, five hundred five".