42756544486631 has 2 divisors, whose sum is σ = 42756544486632. Its totient is φ = 42756544486630.

The previous prime is 42756544486627. The next prime is 42756544486661. The reversal of 42756544486631 is 13668444565724.

42756544486631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42756544486631 - 2² = 42756544486627 is a prime.

It is a super-2 number, since 2×42756544486631² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42756544486661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21378272243315 + 21378272243316.

It is an arithmetic number, because the mean of its divisors is an integer number (21378272243316).

Almost surely, 2^{42756544486631} is an apocalyptic number.

42756544486631 is a deficient number, since it is larger than the sum of its proper divisors (1).

42756544486631 is an equidigital number, since it uses as much as digits as its factorization.

42756544486631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 464486400, while the sum is 65.

The spelling of 42756544486631 in words is "forty-two trillion, seven hundred fifty-six billion, five hundred forty-four million, four hundred eighty-six thousand, six hundred thirty-one".