145445521161 has 8 divisors (see below), whose sum is σ = 193958115264. Its totient is φ = 96948303920.

The previous prime is 145445521159. The next prime is 145445521163. The reversal of 145445521161 is 161125544541.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (145445521159) and next prime (145445521163).

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 145445521161 - 2¹ = 145445521159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145445521163) 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, 3822126 + ... + 3859991.

It is an arithmetic number, because the mean of its divisors is an integer number (24244764408).

Almost surely, 2^145445521161 is an apocalyptic number.

It is an amenable number.

145445521161 is a deficient number, since it is larger than the sum of its proper divisors (48512594103).

145445521161 is an equidigital number, since it uses as much as digits as its factorization.

145445521161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7688431.

The product of its digits is 96000, while the sum is 39.

The spelling of 145445521161 in words is "one hundred forty-five billion, four hundred forty-five million, five hundred twenty-one thousand, one hundred sixty-one".