143666125636541 has 4 divisors (see below), whose sum is σ = 143666752350684. Its totient is φ = 143665498922400.

The previous prime is 143666125636529. The next prime is 143666125636609. The reversal of 143666125636541 is 145636521666341.

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 109208979096100 + 34457146540441 = 10450310^2 + 5870021^2 .

It is a cyclic number.

It is not a de Polignac number, because 143666125636541 - 2²² = 143666121442237 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 (143666125636441) 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, 313013090 + ... + 313471731.

It is an arithmetic number, because the mean of its divisors is an integer number (35916688087671).

Almost surely, 2^{143666125636541} is an apocalyptic number.

It is an amenable number.

143666125636541 is a deficient number, since it is larger than the sum of its proper divisors (626714143).

143666125636541 is an equidigital number, since it uses as much as digits as its factorization.

143666125636541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626714142.

The product of its digits is 55987200, while the sum is 59.

The spelling of 143666125636541 in words is "one hundred forty-three trillion, six hundred sixty-six billion, one hundred twenty-five million, six hundred thirty-six thousand, five hundred forty-one".