142536431563 has 2 divisors, whose sum is σ = 142536431564. Its totient is φ = 142536431562.

The previous prime is 142536431509. The next prime is 142536431579. The reversal of 142536431563 is 365134635241.

It is a strong prime.

It is an emirp because it is prime and its reverse (365134635241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142536431563 is a prime.

It is not a weakly prime, because it can be changed into another prime (142536431503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71268215781 + 71268215782.

It is an arithmetic number, because the mean of its divisors is an integer number (71268215782).

Almost surely, 2^142536431563 is an apocalyptic number.

142536431563 is a deficient number, since it is larger than the sum of its proper divisors (1).

142536431563 is an equidigital number, since it uses as much as digits as its factorization.

142536431563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 43.

The spelling of 142536431563 in words is "one hundred forty-two billion, five hundred thirty-six million, four hundred thirty-one thousand, five hundred sixty-three".