142969916851 has 2 divisors, whose sum is σ = 142969916852. Its totient is φ = 142969916850.

The previous prime is 142969916809. The next prime is 142969916939. The reversal of 142969916851 is 158619969241.

It is a weak prime.

It is an emirp because it is prime and its reverse (158619969241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142969916851 - 2¹⁷ = 142969785779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142969916851.

It is not a weakly prime, because it can be changed into another prime (142969916251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71484958425 + 71484958426.

It is an arithmetic number, because the mean of its divisors is an integer number (71484958426).

Almost surely, 2^142969916851 is an apocalyptic number.

142969916851 is a deficient number, since it is larger than the sum of its proper divisors (1).

142969916851 is an equidigital number, since it uses as much as digits as its factorization.

142969916851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8398080, while the sum is 61.

The spelling of 142969916851 in words is "one hundred forty-two billion, nine hundred sixty-nine million, nine hundred sixteen thousand, eight hundred fifty-one".