42851267947 has 2 divisors, whose sum is σ = 42851267948. Its totient is φ = 42851267946.

The previous prime is 42851267939. The next prime is 42851268037. The reversal of 42851267947 is 74976215824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42851267947 - 2³ = 42851267939 is a prime.

It is not a weakly prime, because it can be changed into another prime (42851267647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21425633973 + 21425633974.

It is an arithmetic number, because the mean of its divisors is an integer number (21425633974).

Almost surely, 2^42851267947 is an apocalyptic number.

42851267947 is a deficient number, since it is larger than the sum of its proper divisors (1).

42851267947 is an equidigital number, since it uses as much as digits as its factorization.

42851267947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6773760, while the sum is 55.

The spelling of 42851267947 in words is "forty-two billion, eight hundred fifty-one million, two hundred sixty-seven thousand, nine hundred forty-seven".