72324755794477 has 2 divisors, whose sum is σ = 72324755794478. Its totient is φ = 72324755794476.

The previous prime is 72324755794393. The next prime is 72324755794567. The reversal of 72324755794477 is 77449755742327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68417199417961 + 3907556376516 = 8271469^2 + 1976754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72324755794477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72324755794877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36162377897238 + 36162377897239.

It is an arithmetic number, because the mean of its divisors is an integer number (36162377897239).

Almost surely, 2^{72324755794477} is an apocalyptic number.

It is an amenable number.

72324755794477 is a deficient number, since it is larger than the sum of its proper divisors (1).

72324755794477 is an equidigital number, since it uses as much as digits as its factorization.

72324755794477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2904249600, while the sum is 73.

The spelling of 72324755794477 in words is "seventy-two trillion, three hundred twenty-four billion, seven hundred fifty-five million, seven hundred ninety-four thousand, four hundred seventy-seven".