72963778403 has 2 divisors, whose sum is σ = 72963778404. Its totient is φ = 72963778402.

The previous prime is 72963778351. The next prime is 72963778429. The reversal of 72963778403 is 30487736927.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72963778403 - 2¹⁰ = 72963777379 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (72963178403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36481889201 + 36481889202.

It is an arithmetic number, because the mean of its divisors is an integer number (36481889202).

Almost surely, 2^72963778403 is an apocalyptic number.

72963778403 is a deficient number, since it is larger than the sum of its proper divisors (1).

72963778403 is an equidigital number, since it uses as much as digits as its factorization.

72963778403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10668672, while the sum is 56.

The spelling of 72963778403 in words is "seventy-two billion, nine hundred sixty-three million, seven hundred seventy-eight thousand, four hundred three".