720461813671 has 2 divisors, whose sum is σ = 720461813672. Its totient is φ = 720461813670.

The previous prime is 720461813587. The next prime is 720461813723. The reversal of 720461813671 is 176318164027.

It is a strong prime.

It is an emirp because it is prime and its reverse (176318164027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720461813671 - 2¹⁷ = 720461682599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720461813471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360230906835 + 360230906836.

It is an arithmetic number, because the mean of its divisors is an integer number (360230906836).

Almost surely, 2^720461813671 is an apocalyptic number.

720461813671 is a deficient number, since it is larger than the sum of its proper divisors (1).

720461813671 is an equidigital number, since it uses as much as digits as its factorization.

720461813671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 46.

Adding to 720461813671 its reverse (176318164027), we get a palindrome (896779977698).

The spelling of 720461813671 in words is "seven hundred twenty billion, four hundred sixty-one million, eight hundred thirteen thousand, six hundred seventy-one".