42731760047 has 2 divisors, whose sum is σ = 42731760048. Its totient is φ = 42731760046.

The previous prime is 42731760041. The next prime is 42731760061. The reversal of 42731760047 is 74006713724.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42731760047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42731759986 and 42731760013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42731760041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21365880023 + 21365880024.

It is an arithmetic number, because the mean of its divisors is an integer number (21365880024).

Almost surely, 2^42731760047 is an apocalyptic number.

42731760047 is a deficient number, since it is larger than the sum of its proper divisors (1).

42731760047 is an equidigital number, since it uses as much as digits as its factorization.

42731760047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 41.

The spelling of 42731760047 in words is "forty-two billion, seven hundred thirty-one million, seven hundred sixty thousand, forty-seven".