142243645551 has 16 divisors (see below), whose sum is σ = 221792972544. Its totient is φ = 79391801664.

The previous prime is 142243645547. The next prime is 142243645589. The reversal of 142243645551 is 155546342241.

It is not a de Polignac number, because 142243645551 - 2² = 142243645547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142243625551) 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, 78760806 + ... + 78762611.

It is an arithmetic number, because the mean of its divisors is an integer number (13862060784).

Almost surely, 2^142243645551 is an apocalyptic number.

142243645551 is a deficient number, since it is larger than the sum of its proper divisors (79549326993).

142243645551 is a wasteful number, since it uses less digits than its factorization.

142243645551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157523470.

The product of its digits is 576000, while the sum is 42.

Adding to 142243645551 its reverse (155546342241), we get a palindrome (297789987792).

The spelling of 142243645551 in words is "one hundred forty-two billion, two hundred forty-three million, six hundred forty-five thousand, five hundred fifty-one".