102143734785 has 48 divisors (see below), whose sum is σ = 179756591040. Its totient is φ = 53644187520.

The previous prime is 102143734751. The next prime is 102143734793. The reversal of 102143734785 is 587437341201.

102143734785 is a `hidden beast` number, since 10 + 214 + 3 + 7 + 347 + 85 = 666.

It is not a de Polignac number, because 102143734785 - 2¹¹ = 102143732737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 102143734785.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12746430 + ... + 12754440.

It is an arithmetic number, because the mean of its divisors is an integer number (3744928980).

Almost surely, 2^102143734785 is an apocalyptic number.

102143734785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102143734785 is a deficient number, since it is larger than the sum of its proper divisors (77612856255).

102143734785 is a wasteful number, since it uses less digits than its factorization.

102143734785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12318 (or 12315 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 102143734785 in words is "one hundred two billion, one hundred forty-three million, seven hundred thirty-four thousand, seven hundred eighty-five".