154448531091457 has 2 divisors, whose sum is σ = 154448531091458. Its totient is φ = 154448531091456.

The previous prime is 154448531091419. The next prime is 154448531091509. The reversal of 154448531091457 is 754190135844451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127680417779776 + 26768113311681 = 11299576^2 + 5173791^2 .

It is an emirp because it is prime and its reverse (754190135844451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154448531091457 - 2¹¹ = 154448531089409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 154448531091395 and 154448531091404.

It is not a weakly prime, because it can be changed into another prime (154448531098457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77224265545728 + 77224265545729.

It is an arithmetic number, because the mean of its divisors is an integer number (77224265545729).

Almost surely, 2^{154448531091457} is an apocalyptic number.

It is an amenable number.

154448531091457 is a deficient number, since it is larger than the sum of its proper divisors (1).

154448531091457 is an equidigital number, since it uses as much as digits as its factorization.

154448531091457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384000, while the sum is 61.

The spelling of 154448531091457 in words is "one hundred fifty-four trillion, four hundred forty-eight billion, five hundred thirty-one million, ninety-one thousand, four hundred fifty-seven".