71928269629 has 2 divisors, whose sum is σ = 71928269630. Its totient is φ = 71928269628.

The previous prime is 71928269597. The next prime is 71928269683. The reversal of 71928269629 is 92696282917.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51870062500 + 20058207129 = 227750^2 + 141627^2 .

It is a cyclic number.

It is not a de Polignac number, because 71928269629 - 2⁵ = 71928269597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71928269689) 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, 35964134814 + 35964134815.

It is an arithmetic number, because the mean of its divisors is an integer number (35964134815).

Almost surely, 2^71928269629 is an apocalyptic number.

It is an amenable number.

71928269629 is a deficient number, since it is larger than the sum of its proper divisors (1).

71928269629 is an equidigital number, since it uses as much as digits as its factorization.

71928269629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 61.

The spelling of 71928269629 in words is "seventy-one billion, nine hundred twenty-eight million, two hundred sixty-nine thousand, six hundred twenty-nine".