77278922323 has 2 divisors, whose sum is σ = 77278922324. Its totient is φ = 77278922322.

The previous prime is 77278922261. The next prime is 77278922327. The reversal of 77278922323 is 32322987277.

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-77278922323 is a prime.

It is not a weakly prime, because it can be changed into another prime (77278922327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38639461161 + 38639461162.

It is an arithmetic number, because the mean of its divisors is an integer number (38639461162).

Almost surely, 2^77278922323 is an apocalyptic number.

77278922323 is a deficient number, since it is larger than the sum of its proper divisors (1).

77278922323 is an equidigital number, since it uses as much as digits as its factorization.

77278922323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 52.

The spelling of 77278922323 in words is "seventy-seven billion, two hundred seventy-eight million, nine hundred twenty-two thousand, three hundred twenty-three".