71236749373 has 2 divisors, whose sum is σ = 71236749374. Its totient is φ = 71236749372.

The previous prime is 71236749371. The next prime is 71236749433. The reversal of 71236749373 is 37394763217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69078031929 + 2158717444 = 262827^2 + 46462^2 .

It is a cyclic number.

It is not a de Polignac number, because 71236749373 - 2¹ = 71236749371 is a prime.

It is a super-2 number, since 2×71236749373² (a number of 23 digits) contains 22 as substring.

Together with 71236749371, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 71236749373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71236749371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35618374686 + 35618374687.

It is an arithmetic number, because the mean of its divisors is an integer number (35618374687).

Almost surely, 2^71236749373 is an apocalyptic number.

It is an amenable number.

71236749373 is a deficient number, since it is larger than the sum of its proper divisors (1).

71236749373 is an equidigital number, since it uses as much as digits as its factorization.

71236749373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4000752, while the sum is 52.

The spelling of 71236749373 in words is "seventy-one billion, two hundred thirty-six million, seven hundred forty-nine thousand, three hundred seventy-three".