42858644685827 has 2 divisors, whose sum is σ = 42858644685828. Its totient is φ = 42858644685826.

The previous prime is 42858644685797. The next prime is 42858644685833. The reversal of 42858644685827 is 72858644685824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42858644685827 - 2³⁴ = 42841464816643 is a prime.

It is not a weakly prime, because it can be changed into another prime (42858644687827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21429322342913 + 21429322342914.

It is an arithmetic number, because the mean of its divisors is an integer number (21429322342914).

Almost surely, 2^{42858644685827} is an apocalyptic number.

42858644685827 is a deficient number, since it is larger than the sum of its proper divisors (1).

42858644685827 is an equidigital number, since it uses as much as digits as its factorization.

42858644685827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6606028800, while the sum is 77.

The spelling of 42858644685827 in words is "forty-two trillion, eight hundred fifty-eight billion, six hundred forty-four million, six hundred eighty-five thousand, eight hundred twenty-seven".