102448018081 has 4 divisors (see below), whose sum is σ = 102691362964. Its totient is φ = 102204673200.

The previous prime is 102448018067. The next prime is 102448018117. The reversal of 102448018081 is 180810844201.

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 1588421025 + 100859597056 = 39855^2 + 317584^2 .

It is a cyclic number.

It is not a de Polignac number, because 102448018081 - 2²⁷ = 102313800353 is a prime.

It is a super-2 number, since 2×102448018081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102448018081.

It is not an unprimeable number, because it can be changed into a prime (102448018481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121671810 + ... + 121672651.

It is an arithmetic number, because the mean of its divisors is an integer number (25672840741).

Almost surely, 2^102448018081 is an apocalyptic number.

It is an amenable number.

102448018081 is a deficient number, since it is larger than the sum of its proper divisors (243344883).

102448018081 is an equidigital number, since it uses as much as digits as its factorization.

102448018081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243344882.

The product of its (nonzero) digits is 16384, while the sum is 37.

The spelling of 102448018081 in words is "one hundred two billion, four hundred forty-eight million, eighteen thousand, eighty-one".