143137750561 has 64 divisors (see below), whose sum is σ = 171189598720. Its totient is φ = 118513704960.

The previous prime is 143137750559. The next prime is 143137750607. The reversal of 143137750561 is 165057731341.

It is a 10-Lehmer number, since φ(143137750561) divides (143137750561-1)¹⁰.

It is a cyclic number.

It is not a de Polignac number, because 143137750561 - 2¹ = 143137750559 is a prime.

It is the 378336-th Hogben number.

It is not an unprimeable number, because it can be changed into a prime (143137750531) by changing a digit.

It is a nontrivial repunit in base 378335.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54074140 + ... + 54076786.

It is an arithmetic number, because the mean of its divisors is an integer number (2674837480).

Almost surely, 2^143137750561 is an apocalyptic number.

It is an amenable number.

143137750561 is a deficient number, since it is larger than the sum of its proper divisors (28051848159).

143137750561 is a wasteful number, since it uses less digits than its factorization.

143137750561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874.

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 143137750561 in words is "one hundred forty-three billion, one hundred thirty-seven million, seven hundred fifty thousand, five hundred sixty-one".