154315542237161 has 2 divisors, whose sum is σ = 154315542237162. Its totient is φ = 154315542237160.

The previous prime is 154315542237089. The next prime is 154315542237173. The reversal of 154315542237161 is 161732245513451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137792382250000 + 16523159987161 = 11738500^2 + 4064869^2 .

It is an emirp because it is prime and its reverse (161732245513451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154315542237161 - 2²² = 154315538042857 is a prime.

It is not a weakly prime, because it can be changed into another prime (154315542237061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77157771118580 + 77157771118581.

It is an arithmetic number, because the mean of its divisors is an integer number (77157771118581).

Almost surely, 2^{154315542237161} is an apocalyptic number.

It is an amenable number.

154315542237161 is a deficient number, since it is larger than the sum of its proper divisors (1).

154315542237161 is an equidigital number, since it uses as much as digits as its factorization.

154315542237161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024000, while the sum is 50.

The spelling of 154315542237161 in words is "one hundred fifty-four trillion, three hundred fifteen billion, five hundred forty-two million, two hundred thirty-seven thousand, one hundred sixty-one".