77720233303 has 2 divisors, whose sum is σ = 77720233304. Its totient is φ = 77720233302.

The previous prime is 77720233277. The next prime is 77720233309. The reversal of 77720233303 is 30333202777.

It is a strong prime.

It is an emirp because it is prime and its reverse (30333202777) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77720233303 - 2²⁹ = 77183362391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77720233309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38860116651 + 38860116652.

It is an arithmetic number, because the mean of its divisors is an integer number (38860116652).

Almost surely, 2^77720233303 is an apocalyptic number.

77720233303 is a deficient number, since it is larger than the sum of its proper divisors (1).

77720233303 is an equidigital number, since it uses as much as digits as its factorization.

77720233303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 111132, while the sum is 37.

The spelling of 77720233303 in words is "seventy-seven billion, seven hundred twenty million, two hundred thirty-three thousand, three hundred three".