76645454843 has 2 divisors, whose sum is σ = 76645454844. Its totient is φ = 76645454842.

The previous prime is 76645454827. The next prime is 76645454881. The reversal of 76645454843 is 34845454667.

It is a weak prime.

It is an emirp because it is prime and its reverse (34845454667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76645454843 - 2⁴ = 76645454827 is a prime.

It is not a weakly prime, because it can be changed into another prime (76645454813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38322727421 + 38322727422.

It is an arithmetic number, because the mean of its divisors is an integer number (38322727422).

Almost surely, 2^76645454843 is an apocalyptic number.

76645454843 is a deficient number, since it is larger than the sum of its proper divisors (1).

76645454843 is an equidigital number, since it uses as much as digits as its factorization.

76645454843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38707200, while the sum is 56.

The spelling of 76645454843 in words is "seventy-six billion, six hundred forty-five million, four hundred fifty-four thousand, eight hundred forty-three".