102485040445 has 4 divisors (see below), whose sum is σ = 122982048540. Its totient is φ = 81988032352.

The previous prime is 102485040431. The next prime is 102485040487. The reversal of 102485040445 is 544040584201.

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 69659572761 + 32825467684 = 263931^2 + 181178^2 .

It is a cyclic number.

It is not a de Polignac number, because 102485040445 - 2²⁵ = 102451486013 is a prime.

It is a congruent 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, 10248504040 + ... + 10248504049.

It is an arithmetic number, because the mean of its divisors is an integer number (30745512135).

Almost surely, 2^102485040445 is an apocalyptic number.

It is an amenable number.

102485040445 is a deficient number, since it is larger than the sum of its proper divisors (20497008095).

102485040445 is an equidigital number, since it uses as much as digits as its factorization.

102485040445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20497008094.

The product of its (nonzero) digits is 102400, while the sum is 37.

The spelling of 102485040445 in words is "one hundred two billion, four hundred eighty-five million, forty thousand, four hundred forty-five".