143261450556661 has 16 divisors (see below), whose sum is σ = 147929141606400. Its totient is φ = 138596660985600.

The previous prime is 143261450556629. The next prime is 143261450556727. The reversal of 143261450556661 is 166655054162341.

It is a cyclic number.

It is not a de Polignac number, because 143261450556661 - 2⁵ = 143261450556629 is a prime.

It is a super-3 number, since 3×143261450556661³ (a number of 43 digits) contains 333 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 (143261450556061) 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, 4049089191 + ... + 4049124571.

It is an arithmetic number, because the mean of its divisors is an integer number (9245571350400).

Almost surely, 2^{143261450556661} is an apocalyptic number.

It is an amenable number.

143261450556661 is a deficient number, since it is larger than the sum of its proper divisors (4667691049739).

143261450556661 is a wasteful number, since it uses less digits than its factorization.

143261450556661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72660.

The product of its (nonzero) digits is 15552000, while the sum is 55.

The spelling of 143261450556661 in words is "one hundred forty-three trillion, two hundred sixty-one billion, four hundred fifty million, five hundred fifty-six thousand, six hundred sixty-one".