42786400665563 has 2 divisors, whose sum is σ = 42786400665564. Its totient is φ = 42786400665562.

The previous prime is 42786400665551. The next prime is 42786400665637. The reversal of 42786400665563 is 36556600468724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42786400665563 - 2³⁰ = 42785326923739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42786400665496 and 42786400665505.

It is not a weakly prime, because it can be changed into another prime (42786400665523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21393200332781 + 21393200332782.

It is an arithmetic number, because the mean of its divisors is an integer number (21393200332782).

Almost surely, 2^{42786400665563} is an apocalyptic number.

42786400665563 is a deficient number, since it is larger than the sum of its proper divisors (1).

42786400665563 is an equidigital number, since it uses as much as digits as its factorization.

42786400665563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174182400, while the sum is 62.

The spelling of 42786400665563 in words is "forty-two trillion, seven hundred eighty-six billion, four hundred million, six hundred sixty-five thousand, five hundred sixty-three".