15434256641 has 2 divisors, whose sum is σ = 15434256642. Its totient is φ = 15434256640.

The previous prime is 15434256631. The next prime is 15434256659. The reversal of 15434256641 is 14665243451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10810800625 + 4623456016 = 103975^2 + 67996^2 .

It is a cyclic number.

It is not a de Polignac number, because 15434256641 - 2⁶ = 15434256577 is a prime.

It is not a weakly prime, because it can be changed into another prime (15434256601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7717128320 + 7717128321.

It is an arithmetic number, because the mean of its divisors is an integer number (7717128321).

Almost surely, 2^15434256641 is an apocalyptic number.

It is an amenable number.

15434256641 is a deficient number, since it is larger than the sum of its proper divisors (1).

15434256641 is an equidigital number, since it uses as much as digits as its factorization.

15434256641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 41.

The spelling of 15434256641 in words is "fifteen billion, four hundred thirty-four million, two hundred fifty-six thousand, six hundred forty-one".