1251344004541 has 4 divisors (see below), whose sum is σ = 1305750265632. Its totient is φ = 1196937743452.

The previous prime is 1251344004517. The next prime is 1251344004571. The reversal of 1251344004541 is 1454004431521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1251344004541 - 2¹⁹ = 1251343480253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1251344004497 and 1251344004506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251344004571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27203130511 + ... + 27203130556.

It is an arithmetic number, because the mean of its divisors is an integer number (326437566408).

Almost surely, 2^{1251344004541} is an apocalyptic number.

It is an amenable number.

1251344004541 is a deficient number, since it is larger than the sum of its proper divisors (54406261091).

1251344004541 is an equidigital number, since it uses as much as digits as its factorization.

1251344004541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54406261090.

The product of its (nonzero) digits is 38400, while the sum is 34.

The spelling of 1251344004541 in words is "one trillion, two hundred fifty-one billion, three hundred forty-four million, four thousand, five hundred forty-one".