102144440000 has 70 divisors (see below), whose sum is σ = 253285113444. Its totient is φ = 40857760000.

The previous prime is 102144439937. The next prime is 102144440003. The reversal of 102144440000 is 44441201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (102144440003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1236806 + ... + 1316805.

Almost surely, 2^102144440000 is an apocalyptic number.

102144440000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102144440000 is an abundant number, since it is smaller than the sum of its proper divisors (151140673444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102144440000 is an frugal number, since it uses more digits than its factorization.

102144440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553643 (or 2553618 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 102144440000 its reverse (44441201), we get a palindrome (102188881201).

The spelling of 102144440000 in words is "one hundred two billion, one hundred forty-four million, four hundred forty thousand".