72776721712459 has 2 divisors, whose sum is σ = 72776721712460. Its totient is φ = 72776721712458.

The previous prime is 72776721712447. The next prime is 72776721712477. The reversal of 72776721712459 is 95421712767727.

It is a weak prime.

It is an emirp because it is prime and its reverse (95421712767727) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72776721712459 - 2¹⁷ = 72776721581387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72776721712394 and 72776721712403.

It is not a weakly prime, because it can be changed into another prime (72776721712259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36388360856229 + 36388360856230.

It is an arithmetic number, because the mean of its divisors is an integer number (36388360856230).

Almost surely, 2^{72776721712459} is an apocalyptic number.

72776721712459 is a deficient number, since it is larger than the sum of its proper divisors (1).

72776721712459 is an equidigital number, since it uses as much as digits as its factorization.

72776721712459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145212480, while the sum is 67.

The spelling of 72776721712459 in words is "seventy-two trillion, seven hundred seventy-six billion, seven hundred twenty-one million, seven hundred twelve thousand, four hundred fifty-nine".