72963778429 has 2 divisors, whose sum is σ = 72963778430. Its totient is φ = 72963778428.

The previous prime is 72963778403. The next prime is 72963778441. The reversal of 72963778429 is 92487736927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40140122500 + 32823655929 = 200350^2 + 181173^2 .

It is a cyclic number.

It is not a de Polignac number, because 72963778429 - 2¹³ = 72963770237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72963778529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36481889214 + 36481889215.

It is an arithmetic number, because the mean of its divisors is an integer number (36481889215).

Almost surely, 2^72963778429 is an apocalyptic number.

It is an amenable number.

72963778429 is a deficient number, since it is larger than the sum of its proper divisors (1).

72963778429 is an equidigital number, since it uses as much as digits as its factorization.

72963778429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64012032, while the sum is 64.

The spelling of 72963778429 in words is "seventy-two billion, nine hundred sixty-three million, seven hundred seventy-eight thousand, four hundred twenty-nine".