105643264155 has 128 divisors (see below), whose sum is σ = 203603549184. Its totient is φ = 46096128000.

The previous prime is 105643264151. The next prime is 105643264157. The reversal of 105643264155 is 551462346501.

It is not a de Polignac number, because 105643264155 - 2² = 105643264151 is a prime.

It is a super-2 number, since 2×105643264155² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105643264151) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 18527805 + ... + 18533505.

It is an arithmetic number, because the mean of its divisors is an integer number (1590652728).

Almost surely, 2^105643264155 is an apocalyptic number.

105643264155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

105643264155 is a deficient number, since it is larger than the sum of its proper divisors (97960285029).

105643264155 is a wasteful number, since it uses less digits than its factorization.

105643264155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5949.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 105643264155 in words is "one hundred five billion, six hundred forty-three million, two hundred sixty-four thousand, one hundred fifty-five".