72872796641 has 2 divisors, whose sum is σ = 72872796642. Its totient is φ = 72872796640.

The previous prime is 72872796629. The next prime is 72872796677. The reversal of 72872796641 is 14669727827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57442188241 + 15430608400 = 239671^2 + 124220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72872796641 is a prime.

It is not a weakly prime, because it can be changed into another prime (72872796341) 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, 36436398320 + 36436398321.

It is an arithmetic number, because the mean of its divisors is an integer number (36436398321).

Almost surely, 2^72872796641 is an apocalyptic number.

It is an amenable number.

72872796641 is a deficient number, since it is larger than the sum of its proper divisors (1).

72872796641 is an equidigital number, since it uses as much as digits as its factorization.

72872796641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14224896, while the sum is 59.

The spelling of 72872796641 in words is "seventy-two billion, eight hundred seventy-two million, seven hundred ninety-six thousand, six hundred forty-one".