76776770347 has 2 divisors, whose sum is σ = 76776770348. Its totient is φ = 76776770346.

The previous prime is 76776770333. The next prime is 76776770381. The reversal of 76776770347 is 74307767767.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (74307767767) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76776770347 - 2¹⁹ = 76776246059 is a prime.

It is not a weakly prime, because it can be changed into another prime (76776776347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38388385173 + 38388385174.

It is an arithmetic number, because the mean of its divisors is an integer number (38388385174).

Almost surely, 2^76776770347 is an apocalyptic number.

76776770347 is a deficient number, since it is larger than the sum of its proper divisors (1).

76776770347 is an equidigital number, since it uses as much as digits as its factorization.

76776770347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50824368, while the sum is 61.

The spelling of 76776770347 in words is "seventy-six billion, seven hundred seventy-six million, seven hundred seventy thousand, three hundred forty-seven".