13366129450 has 12 divisors (see below), whose sum is σ = 24861000870. Its totient is φ = 5346451760.

The previous prime is 13366129433. The next prime is 13366129471. The reversal of 13366129450 is 5492166331.

It can be written as a sum of positive squares in 3 ways, for example, as 11827215009 + 1538914441 = 108753^2 + 39229^2 .

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, 133661245 + ... + 133661344.

Almost surely, 2^13366129450 is an apocalyptic number.

13366129450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13366129450 is a deficient number, since it is larger than the sum of its proper divisors (11494871420).

13366129450 is a wasteful number, since it uses less digits than its factorization.

13366129450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267322601 (or 267322596 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 13366129450 in words is "thirteen billion, three hundred sixty-six million, one hundred twenty-nine thousand, four hundred fifty".