145216552161 has 8 divisors (see below), whose sum is σ = 193637613024. Its totient is φ = 96803263040.

The previous prime is 145216552141. The next prime is 145216552163. The reversal of 145216552161 is 161255612541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145216552161 - 2⁶ = 145216552097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145216552163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1899195 + ... + 1974176.

It is an arithmetic number, because the mean of its divisors is an integer number (24204701628).

Almost surely, 2^145216552161 is an apocalyptic number.

It is an amenable number.

145216552161 is a deficient number, since it is larger than the sum of its proper divisors (48421060863).

145216552161 is a wasteful number, since it uses less digits than its factorization.

145216552161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885871.

The product of its digits is 72000, while the sum is 39.

The spelling of 145216552161 in words is "one hundred forty-five billion, two hundred sixteen million, five hundred fifty-two thousand, one hundred sixty-one".