254351436649 has 2 divisors, whose sum is σ = 254351436650. Its totient is φ = 254351436648.

The previous prime is 254351436637. The next prime is 254351436667. The reversal of 254351436649 is 946634153452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221612153049 + 32739283600 = 470757^2 + 180940^2 .

It is a cyclic number.

It is not a de Polignac number, because 254351436649 - 2¹⁷ = 254351305577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 254351436596 and 254351436605.

It is not a weakly prime, because it can be changed into another prime (254351476649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127175718324 + 127175718325.

It is an arithmetic number, because the mean of its divisors is an integer number (127175718325).

Almost surely, 2^254351436649 is an apocalyptic number.

It is an amenable number.

254351436649 is a deficient number, since it is larger than the sum of its proper divisors (1).

254351436649 is an equidigital number, since it uses as much as digits as its factorization.

254351436649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9331200, while the sum is 52.

The spelling of 254351436649 in words is "two hundred fifty-four billion, three hundred fifty-one million, four hundred thirty-six thousand, six hundred forty-nine".