1878317825047 has 2 divisors, whose sum is σ = 1878317825048. Its totient is φ = 1878317825046.

The previous prime is 1878317825029. The next prime is 1878317825113. The reversal of 1878317825047 is 7405287138781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1878317825047 - 2³⁵ = 1843958086679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1878317225047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 939158912523 + 939158912524.

It is an arithmetic number, because the mean of its divisors is an integer number (939158912524).

Almost surely, 2^{1878317825047} is an apocalyptic number.

1878317825047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1878317825047 is an equidigital number, since it uses as much as digits as its factorization.

1878317825047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21073920, while the sum is 61.

The spelling of 1878317825047 in words is "one trillion, eight hundred seventy-eight billion, three hundred seventeen million, eight hundred twenty-five thousand, forty-seven".