13404542251 has 4 divisors (see below), whose sum is σ = 13463077600. Its totient is φ = 13346006904.

The previous prime is 13404542227. The next prime is 13404542287. The reversal of 13404542251 is 15224540431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15224540431 = 22811 ⋅667421.

It is a cyclic number.

It is not a de Polignac number, because 13404542251 - 2²³ = 13396153643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13404548251) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 29267331 + ... + 29267788.

It is an arithmetic number, because the mean of its divisors is an integer number (3365769400).

Almost surely, 2^13404542251 is an apocalyptic number.

13404542251 is a deficient number, since it is larger than the sum of its proper divisors (58535349).

13404542251 is an equidigital number, since it uses as much as digits as its factorization.

13404542251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58535348.

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 13404542251 in words is "thirteen billion, four hundred four million, five hundred forty-two thousand, two hundred fifty-one".