143136415561 has 4 divisors (see below), whose sum is σ = 143138554624. Its totient is φ = 143134276500.

The previous prime is 143136415549. The next prime is 143136415577. The reversal of 143136415561 is 165514631341.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 143136415561 - 2⁵ = 143136415529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143136415531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965805 + ... + 1104106.

It is an arithmetic number, because the mean of its divisors is an integer number (35784638656).

Almost surely, 2^143136415561 is an apocalyptic number.

It is an amenable number.

143136415561 is a deficient number, since it is larger than the sum of its proper divisors (2139063).

143136415561 is an equidigital number, since it uses as much as digits as its factorization.

143136415561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139062.

The product of its digits is 129600, while the sum is 40.

The spelling of 143136415561 in words is "one hundred forty-three billion, one hundred thirty-six million, four hundred fifteen thousand, five hundred sixty-one".