105512343555 has 32 divisors (see below), whose sum is σ = 173675114496. Its totient is φ = 54675414144.

The previous prime is 105512343551. The next prime is 105512343571. The reversal of 105512343555 is 555343215501.

It is not a de Polignac number, because 105512343555 - 2² = 105512343551 is a prime.

It is a super-2 number, since 2×105512343555² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105512343551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 562387 + ... + 726156.

It is an arithmetic number, because the mean of its divisors is an integer number (5427347328).

Almost surely, 2^105512343555 is an apocalyptic number.

105512343555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

105512343555 is a deficient number, since it is larger than the sum of its proper divisors (68162770941).

105512343555 is a wasteful number, since it uses less digits than its factorization.

105512343555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288707.

The product of its (nonzero) digits is 225000, while the sum is 39.

The spelling of 105512343555 in words is "one hundred five billion, five hundred twelve million, three hundred forty-three thousand, five hundred fifty-five".