102025315144 has 8 divisors (see below), whose sum is σ = 191297465910. Its totient is φ = 51012657568.

The previous prime is 102025315103. The next prime is 102025315163. The reversal of 102025315144 is 441513520201.

It can be written as a sum of positive squares in only one way, i.e., 101104920900 + 920394244 = 317970^2 + 30338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 6376582189 + ... + 6376582204.

Almost surely, 2^102025315144 is an apocalyptic number.

It is an amenable number.

102025315144 is a deficient number, since it is larger than the sum of its proper divisors (89272150766).

102025315144 is a wasteful number, since it uses less digits than its factorization.

102025315144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12753164399 (or 12753164395 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 102025315144 its reverse (441513520201), we get a palindrome (543538835345).

The spelling of 102025315144 in words is "one hundred two billion, twenty-five million, three hundred fifteen thousand, one hundred forty-four".