42887815864403 has 2 divisors, whose sum is σ = 42887815864404. Its totient is φ = 42887815864402.

The previous prime is 42887815864343. The next prime is 42887815864429. The reversal of 42887815864403 is 30446851878824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42887815864403 - 2¹⁸ = 42887815602259 is a prime.

It is not a weakly prime, because it can be changed into another prime (42887815804403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21443907932201 + 21443907932202.

It is an arithmetic number, because the mean of its divisors is an integer number (21443907932202).

Almost surely, 2^{42887815864403} is an apocalyptic number.

42887815864403 is a deficient number, since it is larger than the sum of its proper divisors (1).

42887815864403 is an equidigital number, since it uses as much as digits as its factorization.

42887815864403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 330301440, while the sum is 68.

The spelling of 42887815864403 in words is "forty-two trillion, eight hundred eighty-seven billion, eight hundred fifteen million, eight hundred sixty-four thousand, four hundred three".