143131546661553 has 12 divisors (see below), whose sum is σ = 206757523073140. Its totient is φ = 95415513104736.

The previous prime is 143131546661507. The next prime is 143131546661603. The reversal of 143131546661553 is 355166645131341.

143131546661553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 76928458766769 + 66203087894784 = 8770887^2 + 8136528^2 .

It is not a de Polignac number, because 143131546661553 - 2²⁹ = 143131009790641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143131546661553.

It is not an unprimeable number, because it can be changed into a prime (143131546661053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 459669298 + ... + 459980571.

Almost surely, 2^{143131546661553} is an apocalyptic number.

It is an amenable number.

143131546661553 is a deficient number, since it is larger than the sum of its proper divisors (63625976411587).

143131546661553 is a wasteful number, since it uses less digits than its factorization.

143131546661553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919667168 (or 919667165 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 54.

The spelling of 143131546661553 in words is "one hundred forty-three trillion, one hundred thirty-one billion, five hundred forty-six million, six hundred sixty-one thousand, five hundred fifty-three".