145539430427161 has 64 divisors (see below), whose sum is σ = 153624196218880. Its totient is φ = 137738850036480.

The previous prime is 145539430427159. The next prime is 145539430427197. The reversal of 145539430427161 is 161724034935541.

It is a 4-Lehmer number, since φ(145539430427161) divides (145539430427161-1)⁴.

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 145539430427161 - 2¹ = 145539430427159 is a prime.

It is a deceptive number, since it divides R_{145539430427160}.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145539430227161) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 75291996151 + ... + 75291998083.

It is an arithmetic number, because the mean of its divisors is an integer number (2400378065920).

It is a Poulet number, since it divides 2^{145539430427160}-1.

Almost surely, 2^{145539430427161} is an apocalyptic number.

145539430427161 is the 6448465-th centered heptagonal number.

It is an amenable number.

145539430427161 is a deficient number, since it is larger than the sum of its proper divisors (8084765791719).

145539430427161 is a wasteful number, since it uses less digits than its factorization.

145539430427161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174.

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 145539430427161 in words is "one hundred forty-five trillion, five hundred thirty-nine billion, four hundred thirty million, four hundred twenty-seven thousand, one hundred sixty-one".