72923499787 has 2 divisors, whose sum is σ = 72923499788. Its totient is φ = 72923499786.

The previous prime is 72923499773. The next prime is 72923499793. The reversal of 72923499787 is 78799432927.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72923499787 is a prime.

It is not a weakly prime, because it can be changed into another prime (72923499707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36461749893 + 36461749894.

It is an arithmetic number, because the mean of its divisors is an integer number (36461749894).

Almost surely, 2^72923499787 is an apocalyptic number.

72923499787 is a deficient number, since it is larger than the sum of its proper divisors (1).

72923499787 is an equidigital number, since it uses as much as digits as its factorization.

72923499787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96018048, while the sum is 67.

The spelling of 72923499787 in words is "seventy-two billion, nine hundred twenty-three million, four hundred ninety-nine thousand, seven hundred eighty-seven".