154230561481 has 2 divisors, whose sum is σ = 154230561482. Its totient is φ = 154230561480.

The previous prime is 154230561427. The next prime is 154230561509. The reversal of 154230561481 is 184165032451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115032897225 + 39197664256 = 339165^2 + 197984^2 .

It is a cyclic number.

It is not a de Polignac number, because 154230561481 - 2¹⁵ = 154230528713 is a prime.

It is a super-2 number, since 2×154230561481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (154230561181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77115280740 + 77115280741.

It is an arithmetic number, because the mean of its divisors is an integer number (77115280741).

Almost surely, 2^154230561481 is an apocalyptic number.

It is an amenable number.

154230561481 is a deficient number, since it is larger than the sum of its proper divisors (1).

154230561481 is an equidigital number, since it uses as much as digits as its factorization.

154230561481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 154230561481 in words is "one hundred fifty-four billion, two hundred thirty million, five hundred sixty-one thousand, four hundred eighty-one".