42605494751 has 2 divisors, whose sum is σ = 42605494752. Its totient is φ = 42605494750.

The previous prime is 42605494717. The next prime is 42605494753. The reversal of 42605494751 is 15749450624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42605494751 - 2²² = 42601300447 is a prime.

Together with 42605494753, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42605494696 and 42605494705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42605494753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21302747375 + 21302747376.

It is an arithmetic number, because the mean of its divisors is an integer number (21302747376).

Almost surely, 2^42605494751 is an apocalyptic number.

42605494751 is a deficient number, since it is larger than the sum of its proper divisors (1).

42605494751 is an equidigital number, since it uses as much as digits as its factorization.

42605494751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 42605494751 in words is "forty-two billion, six hundred five million, four hundred ninety-four thousand, seven hundred fifty-one".