145251166741 has 4 divisors (see below), whose sum is σ = 145300092300. Its totient is φ = 145202241184.

The previous prime is 145251166721. The next prime is 145251166757. The reversal of 145251166741 is 147661152541.

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 62873556516 + 82377610225 = 250746^2 + 287015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145251166741 is a prime.

It is a super-2 number, since 2×145251166741² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145251166721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24458326 + ... + 24464263.

It is an arithmetic number, because the mean of its divisors is an integer number (36325023075).

Almost surely, 2^145251166741 is an apocalyptic number.

It is an amenable number.

145251166741 is a deficient number, since it is larger than the sum of its proper divisors (48925559).

145251166741 is an equidigital number, since it uses as much as digits as its factorization.

145251166741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48925558.

The product of its digits is 201600, while the sum is 43.

The spelling of 145251166741 in words is "one hundred forty-five billion, two hundred fifty-one million, one hundred sixty-six thousand, seven hundred forty-one".