72447502051 has 2 divisors, whose sum is σ = 72447502052. Its totient is φ = 72447502050.

The previous prime is 72447502027. The next prime is 72447502079. The reversal of 72447502051 is 15020574427.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72447502051 - 2¹¹ = 72447500003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72447502051.

It is not a weakly prime, because it can be changed into another prime (72447502091) 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, 36223751025 + 36223751026.

It is an arithmetic number, because the mean of its divisors is an integer number (36223751026).

Almost surely, 2^72447502051 is an apocalyptic number.

72447502051 is a deficient number, since it is larger than the sum of its proper divisors (1).

72447502051 is an equidigital number, since it uses as much as digits as its factorization.

72447502051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78400, while the sum is 37.

The spelling of 72447502051 in words is "seventy-two billion, four hundred forty-seven million, five hundred two thousand, fifty-one".