712991626817 has 2 divisors, whose sum is σ = 712991626818. Its totient is φ = 712991626816.

The previous prime is 712991626799. The next prime is 712991626847. The reversal of 712991626817 is 718626199217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 692225664001 + 20765962816 = 832001^2 + 144104^2 .

It is an emirp because it is prime and its reverse (718626199217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 712991626817 - 2⁸ = 712991626561 is a prime.

It is a super-2 number, since 2×712991626817² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (712991626847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356495813408 + 356495813409.

It is an arithmetic number, because the mean of its divisors is an integer number (356495813409).

Almost surely, 2^712991626817 is an apocalyptic number.

It is an amenable number.

712991626817 is a deficient number, since it is larger than the sum of its proper divisors (1).

712991626817 is an equidigital number, since it uses as much as digits as its factorization.

712991626817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 59.

The spelling of 712991626817 in words is "seven hundred twelve billion, nine hundred ninety-one million, six hundred twenty-six thousand, eight hundred seventeen".