105545044125520 has 120 divisors (see below), whose sum is σ = 246380117940000. Its totient is φ = 42048473795328.

The previous prime is 105545044125509. The next prime is 105545044125557. The reversal of 105545044125520 is 25521440545501.

It is a super-2 number, since 2×105545044125520² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52693480839 + ... + 52693482841.

It is an arithmetic number, because the mean of its divisors is an integer number (2053167649500).

Almost surely, 2^{105545044125520} is an apocalyptic number.

105545044125520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105545044125520 is an abundant number, since it is smaller than the sum of its proper divisors (140835073814480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105545044125520 is an frugal number, since it uses more digits than its factorization.

105545044125520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5177 (or 3168 counting only the distinct ones).

The product of its (nonzero) digits is 800000, while the sum is 43.

The spelling of 105545044125520 in words is "one hundred five trillion, five hundred forty-five billion, forty-four million, one hundred twenty-five thousand, five hundred twenty".