154540522369 has 2 divisors, whose sum is σ = 154540522370. Its totient is φ = 154540522368.

The previous prime is 154540522351. The next prime is 154540522373. The reversal of 154540522369 is 963225045451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94851680400 + 59688841969 = 307980^2 + 244313^2 .

It is a cyclic number.

It is not a de Polignac number, because 154540522369 - 2²⁷ = 154406304641 is a prime.

It is a super-2 number, since 2×154540522369² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (154540522769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77270261184 + 77270261185.

It is an arithmetic number, because the mean of its divisors is an integer number (77270261185).

Almost surely, 2^154540522369 is an apocalyptic number.

It is an amenable number.

154540522369 is a deficient number, since it is larger than the sum of its proper divisors (1).

154540522369 is an equidigital number, since it uses as much as digits as its factorization.

154540522369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 154540522369 in words is "one hundred fifty-four billion, five hundred forty million, five hundred twenty-two thousand, three hundred sixty-nine".