13623443450 has 12 divisors (see below), whose sum is σ = 25339604910. Its totient is φ = 5449377360.

The previous prime is 13623443413. The next prime is 13623443503. The reversal of 13623443450 is 5434432631.

It can be written as a sum of positive squares in 3 ways, for example, as 7161052129 + 6462391321 = 84623^2 + 80389^2 .

It is a super-2 number, since 2×13623443450² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13623443450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 136234385 + ... + 136234484.

Almost surely, 2^13623443450 is an apocalyptic number.

13623443450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13623443450 is a deficient number, since it is larger than the sum of its proper divisors (11716161460).

13623443450 is a wasteful number, since it uses less digits than its factorization.

13623443450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272468881 (or 272468876 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 35.

The spelling of 13623443450 in words is "thirteen billion, six hundred twenty-three million, four hundred forty-three thousand, four hundred fifty".