102144330545 has 4 divisors (see below), whose sum is σ = 122573196660. Its totient is φ = 81715464432.

The previous prime is 102144330517. The next prime is 102144330551. The reversal of 102144330545 is 545033441201.

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 29337180961 + 72807149584 = 171281^2 + 269828^2 .

It is a cyclic number.

It is not a de Polignac number, because 102144330545 - 2²⁰ = 102143281969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10214433050 + ... + 10214433059.

It is an arithmetic number, because the mean of its divisors is an integer number (30643299165).

Almost surely, 2^102144330545 is an apocalyptic number.

It is an amenable number.

102144330545 is a deficient number, since it is larger than the sum of its proper divisors (20428866115).

102144330545 is an equidigital number, since it uses as much as digits as its factorization.

102144330545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20428866114.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 102144330545 its reverse (545033441201), we get a palindrome (647177771746).

The spelling of 102144330545 in words is "one hundred two billion, one hundred forty-four million, three hundred thirty thousand, five hundred forty-five".