13628434507 has 4 divisors (see below), whose sum is σ = 13693024456. Its totient is φ = 13563844560.

The previous prime is 13628434487. The next prime is 13628434517. The reversal of 13628434507 is 70543482631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13628434507 is a prime.

It is a super-2 number, since 2×13628434507² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13628434517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32294658 + ... + 32295079.

It is an arithmetic number, because the mean of its divisors is an integer number (3423256114).

Almost surely, 2^13628434507 is an apocalyptic number.

13628434507 is a deficient number, since it is larger than the sum of its proper divisors (64589949).

13628434507 is an equidigital number, since it uses as much as digits as its factorization.

13628434507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64589948.

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 13628434507 in words is "thirteen billion, six hundred twenty-eight million, four hundred thirty-four thousand, five hundred seven".