154042001569 has 2 divisors, whose sum is σ = 154042001570. Its totient is φ = 154042001568.

The previous prime is 154042001551. The next prime is 154042001591. The reversal of 154042001569 is 965100240451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133035267600 + 21006733969 = 364740^2 + 144937^2 .

It is a cyclic number.

It is not a de Polignac number, because 154042001569 - 2⁵ = 154042001537 is a prime.

It is a super-2 number, since 2×154042001569² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (154042001599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77021000784 + 77021000785.

It is an arithmetic number, because the mean of its divisors is an integer number (77021000785).

Almost surely, 2^154042001569 is an apocalyptic number.

It is an amenable number.

154042001569 is a deficient number, since it is larger than the sum of its proper divisors (1).

154042001569 is an equidigital number, since it uses as much as digits as its factorization.

154042001569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 154042001569 in words is "one hundred fifty-four billion, forty-two million, one thousand, five hundred sixty-nine".