72503742251 has 2 divisors, whose sum is σ = 72503742252. Its totient is φ = 72503742250.

The previous prime is 72503742239. The next prime is 72503742257. The reversal of 72503742251 is 15224730527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72503742251 - 2¹⁰ = 72503741227 is a prime.

It is not a weakly prime, because it can be changed into another prime (72503742257) 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, 36251871125 + 36251871126.

It is an arithmetic number, because the mean of its divisors is an integer number (36251871126).

Almost surely, 2^72503742251 is an apocalyptic number.

72503742251 is a deficient number, since it is larger than the sum of its proper divisors (1).

72503742251 is an equidigital number, since it uses as much as digits as its factorization.

72503742251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 117600, while the sum is 38.

The spelling of 72503742251 in words is "seventy-two billion, five hundred three million, seven hundred forty-two thousand, two hundred fifty-one".