145256566161 has 64 divisors (see below), whose sum is σ = 232066252800. Its totient is φ = 79064004096.

The previous prime is 145256566153. The next prime is 145256566183. The reversal of 145256566161 is 161665652541.

It is not a de Polignac number, because 145256566161 - 2³ = 145256566153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145256566161.

It is not an unprimeable number, because it can be changed into a prime (145256566141) 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, 26393136 + ... + 26398638.

It is an arithmetic number, because the mean of its divisors is an integer number (3626035200).

Almost surely, 2^145256566161 is an apocalyptic number.

It is an amenable number.

145256566161 is a deficient number, since it is larger than the sum of its proper divisors (86809686639).

145256566161 is a wasteful number, since it uses less digits than its factorization.

145256566161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6118.

The product of its digits is 1296000, while the sum is 48.

The spelling of 145256566161 in words is "one hundred forty-five billion, two hundred fifty-six million, five hundred sixty-six thousand, one hundred sixty-one".