143665634656401 has 96 divisors (see below), whose sum is σ = 229021845803520. Its totient is φ = 79566442560000.

The previous prime is 143665634656393. The next prime is 143665634656421. The reversal of 143665634656401 is 104656436566341.

It is not a de Polignac number, because 143665634656401 - 2³ = 143665634656393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143665634656421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5199422856 + ... + 5199450486.

It is an arithmetic number, because the mean of its divisors is an integer number (2385644227120).

Almost surely, 2^{143665634656401} is an apocalyptic number.

143665634656401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

143665634656401 is a deficient number, since it is larger than the sum of its proper divisors (85356211147119).

143665634656401 is a wasteful number, since it uses less digits than its factorization.

143665634656401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38679 (or 38668 counting only the distinct ones).

The product of its (nonzero) digits is 111974400, while the sum is 60.

The spelling of 143665634656401 in words is "one hundred forty-three trillion, six hundred sixty-five billion, six hundred thirty-four million, six hundred fifty-six thousand, four hundred one".