72983116777 has 2 divisors, whose sum is σ = 72983116778. Its totient is φ = 72983116776.

The previous prime is 72983116763. The next prime is 72983116819. The reversal of 72983116777 is 77761138927.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57705167961 + 15277948816 = 240219^2 + 123604^2 .

It is an emirp because it is prime and its reverse (77761138927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72983116777 - 2⁷ = 72983116649 is a prime.

It is not a weakly prime, because it can be changed into another prime (72983116277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36491558388 + 36491558389.

It is an arithmetic number, because the mean of its divisors is an integer number (36491558389).

Almost surely, 2^72983116777 is an apocalyptic number.

It is an amenable number.

72983116777 is a deficient number, since it is larger than the sum of its proper divisors (1).

72983116777 is an equidigital number, since it uses as much as digits as its factorization.

72983116777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6223392, while the sum is 58.

The spelling of 72983116777 in words is "seventy-two billion, nine hundred eighty-three million, one hundred sixteen thousand, seven hundred seventy-seven".