1542544452851 has 2 divisors, whose sum is σ = 1542544452852. Its totient is φ = 1542544452850.

The previous prime is 1542544452833. The next prime is 1542544452893. The reversal of 1542544452851 is 1582544452451.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1542544452851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1542544452851.

It is not a weakly prime, because it can be changed into another prime (1542544452811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771272226425 + 771272226426.

It is an arithmetic number, because the mean of its divisors is an integer number (771272226426).

Almost surely, 2^{1542544452851} is an apocalyptic number.

1542544452851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542544452851 is an equidigital number, since it uses as much as digits as its factorization.

1542544452851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5120000, while the sum is 50.

The spelling of 1542544452851 in words is "one trillion, five hundred forty-two billion, five hundred forty-four million, four hundred fifty-two thousand, eight hundred fifty-one".