105551321560 has 64 divisors (see below), whose sum is σ = 239197017600. Its totient is φ = 41917689216.

The previous prime is 105551321537. The next prime is 105551321581. The reversal of 105551321560 is 65123155501.

It is a super-2 number, since 2×105551321560² (a number of 23 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 15 ways as a sum of consecutive naturals, for example, 6635937 + ... + 6651823.

It is an arithmetic number, because the mean of its divisors is an integer number (3737453400).

Almost surely, 2^105551321560 is an apocalyptic number.

105551321560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105551321560 is an abundant number, since it is smaller than the sum of its proper divisors (133645696040).

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

105551321560 is a wasteful number, since it uses less digits than its factorization.

105551321560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17080 (or 17076 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 105551321560 in words is "one hundred five billion, five hundred fifty-one million, three hundred twenty-one thousand, five hundred sixty".