77901872723 has 2 divisors, whose sum is σ = 77901872724. Its totient is φ = 77901872722.

The previous prime is 77901872677. The next prime is 77901872813. The reversal of 77901872723 is 32727810977.

It is a weak prime.

It is an emirp because it is prime and its reverse (32727810977) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77901872723 - 2¹⁴ = 77901856339 is a prime.

It is not a weakly prime, because it can be changed into another prime (77901878723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38950936361 + 38950936362.

It is an arithmetic number, because the mean of its divisors is an integer number (38950936362).

Almost surely, 2^77901872723 is an apocalyptic number.

77901872723 is a deficient number, since it is larger than the sum of its proper divisors (1).

77901872723 is an equidigital number, since it uses as much as digits as its factorization.

77901872723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2074464, while the sum is 53.

The spelling of 77901872723 in words is "seventy-seven billion, nine hundred one million, eight hundred seventy-two thousand, seven hundred twenty-three".