102243434440 has 128 divisors (see below), whose sum is σ = 266597971200. Its totient is φ = 34566497280.

The previous prime is 102243434369. The next prime is 102243434521. The reversal of 102243434440 is 44434342201.

102243434440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×102243434440² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6431782 + ... + 6447658.

It is an arithmetic number, because the mean of its divisors is an integer number (2082796650).

Almost surely, 2^102243434440 is an apocalyptic number.

102243434440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102243434440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133298985600).

102243434440 is an abundant number, since it is smaller than the sum of its proper divisors (164354536760).

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

102243434440 is a wasteful number, since it uses less digits than its factorization.

102243434440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16215 (or 16211 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 102243434440 its reverse (44434342201), we get a palindrome (146677776641).

The spelling of 102243434440 in words is "one hundred two billion, two hundred forty-three million, four hundred thirty-four thousand, four hundred forty".