6429445502185 has 4 divisors (see below), whose sum is σ = 7715334602628. Its totient is φ = 5143556401744.

The previous prime is 6429445502177. The next prime is 6429445502197. The reversal of 6429445502185 is 5812055449246.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1026298668096 + 5403146834089 = 1013064^2 + 2324467^2 .

It is a cyclic number.

It is not a de Polignac number, because 6429445502185 - 2³ = 6429445502177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642944550214 + ... + 642944550223.

It is an arithmetic number, because the mean of its divisors is an integer number (1928833650657).

Almost surely, 2^{6429445502185} is an apocalyptic number.

It is an amenable number.

6429445502185 is a deficient number, since it is larger than the sum of its proper divisors (1285889100443).

6429445502185 is a wasteful number, since it uses less digits than its factorization.

6429445502185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285889100442.

The product of its (nonzero) digits is 13824000, while the sum is 55.

The spelling of 6429445502185 in words is "six trillion, four hundred twenty-nine billion, four hundred forty-five million, five hundred two thousand, one hundred eighty-five".