154205351562641 has 2 divisors, whose sum is σ = 154205351562642. Its totient is φ = 154205351562640.

The previous prime is 154205351562611. The next prime is 154205351562697. The reversal of 154205351562641 is 146265153502451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91493127561616 + 62712224001025 = 9565204^2 + 7919105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154205351562641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154205351562641.

It is not a weakly prime, because it can be changed into another prime (154205351562601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77102675781320 + 77102675781321.

It is an arithmetic number, because the mean of its divisors is an integer number (77102675781321).

Almost surely, 2^{154205351562641} is an apocalyptic number.

It is an amenable number.

154205351562641 is a deficient number, since it is larger than the sum of its proper divisors (1).

154205351562641 is an equidigital number, since it uses as much as digits as its factorization.

154205351562641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320000, while the sum is 50.

The spelling of 154205351562641 in words is "one hundred fifty-four trillion, two hundred five billion, three hundred fifty-one million, five hundred sixty-two thousand, six hundred forty-one".