105103453440 has 72 divisors (see below), whose sum is σ = 335674166688. Its totient is φ = 28027586560.

The previous prime is 105103453417. The next prime is 105103453457. The reversal of 105103453440 is 44354301501.

It is a super-2 number, since 2×105103453440² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 105103453398 and 105103453407.

It is a congruent number.

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, 13681506 + ... + 13689185.

It is an arithmetic number, because the mean of its divisors is an integer number (4662141204).

Almost surely, 2^105103453440 is an apocalyptic number.

105103453440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105103453440 is an abundant number, since it is smaller than the sum of its proper divisors (230570713248).

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

105103453440 is an equidigital number, since it uses as much as digits as its factorization.

105103453440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27370715 (or 27370701 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 105103453440 its reverse (44354301501), we get a palindrome (149457754941).

The spelling of 105103453440 in words is "one hundred five billion, one hundred three million, four hundred fifty-three thousand, four hundred forty".