42731760823 has 2 divisors, whose sum is σ = 42731760824. Its totient is φ = 42731760822.

The previous prime is 42731760821. The next prime is 42731760853. The reversal of 42731760823 is 32806713724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42731760823 - 2¹ = 42731760821 is a prime.

Together with 42731760821, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42731760823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42731760821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21365880411 + 21365880412.

It is an arithmetic number, because the mean of its divisors is an integer number (21365880412).

Almost surely, 2^42731760823 is an apocalyptic number.

42731760823 is a deficient number, since it is larger than the sum of its proper divisors (1).

42731760823 is an equidigital number, since it uses as much as digits as its factorization.

42731760823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 42731760823 in words is "forty-two billion, seven hundred thirty-one million, seven hundred sixty thousand, eight hundred twenty-three".