102443082440 has 32 divisors (see below), whose sum is σ = 230712651000. Its totient is φ = 40938883584.

The previous prime is 102443082431. The next prime is 102443082451. The reversal of 102443082440 is 44280344201.

102443082440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 74855865604 + 27587216836 = 273598^2 + 166094^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102443082397 and 102443082406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1155125 + ... + 1240644.

Almost surely, 2^102443082440 is an apocalyptic number.

102443082440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102443082440 is an abundant number, since it is smaller than the sum of its proper divisors (128269568560).

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

102443082440 is a wasteful number, since it uses less digits than its factorization.

102443082440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396849 (or 2396845 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

The spelling of 102443082440 in words is "one hundred two billion, four hundred forty-three million, eighty-two thousand, four hundred forty".