143666616610331 has 16 divisors (see below), whose sum is σ = 147403161759744. Its totient is φ = 139948104809184.

The previous prime is 143666616610277. The next prime is 143666616610337. The reversal of 143666616610331 is 133016616666341.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 143666616610331 - 2²⁶ = 143666549501467 is a prime.

It is a super-2 number, since 2×143666616610331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143666616610337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212392400 + ... + 213067746.

It is an arithmetic number, because the mean of its divisors is an integer number (9212697609984).

Almost surely, 2^{143666616610331} is an apocalyptic number.

143666616610331 is a deficient number, since it is larger than the sum of its proper divisors (3736545149413).

143666616610331 is a wasteful number, since it uses less digits than its factorization.

143666616610331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688690.

The product of its (nonzero) digits is 5038848, while the sum is 53.

The spelling of 143666616610331 in words is "one hundred forty-three trillion, six hundred sixty-six billion, six hundred sixteen million, six hundred ten thousand, three hundred thirty-one".