65918887043 has 2 divisors, whose sum is σ = 65918887044. Its totient is φ = 65918887042.

The previous prime is 65918886973. The next prime is 65918887061. The reversal of 65918887043 is 34078881956.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65918887043 is a prime.

It is not a weakly prime, because it can be changed into another prime (65918887543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32959443521 + 32959443522.

It is an arithmetic number, because the mean of its divisors is an integer number (32959443522).

Almost surely, 2^65918887043 is an apocalyptic number.

65918887043 is a deficient number, since it is larger than the sum of its proper divisors (1).

65918887043 is an equidigital number, since it uses as much as digits as its factorization.

65918887043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11612160, while the sum is 59.

The spelling of 65918887043 in words is "sixty-five billion, nine hundred eighteen million, eight hundred eighty-seven thousand, forty-three".