145450044234661 has 4 divisors (see below), whose sum is σ = 145470504228300. Its totient is φ = 145429584241024.

The previous prime is 145450044234641. The next prime is 145450044234673. The reversal of 145450044234661 is 166432440054541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17809623821025 + 127640420413636 = 4220145^2 + 11297806^2 .

It is a cyclic number.

It is not a de Polignac number, because 145450044234661 - 2¹³ = 145450044226469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145450044234641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10229986156 + ... + 10230000373.

It is an arithmetic number, because the mean of its divisors is an integer number (36367626057075).

Almost surely, 2^{145450044234661} is an apocalyptic number.

It is an amenable number.

145450044234661 is a deficient number, since it is larger than the sum of its proper divisors (20459993639).

145450044234661 is an equidigital number, since it uses as much as digits as its factorization.

145450044234661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20459993638.

The product of its (nonzero) digits is 5529600, while the sum is 49.

The spelling of 145450044234661 in words is "one hundred forty-five trillion, four hundred fifty billion, forty-four million, two hundred thirty-four thousand, six hundred sixty-one".