722657051971 has 2 divisors, whose sum is σ = 722657051972. Its totient is φ = 722657051970.

The previous prime is 722657051969. The next prime is 722657052101. The reversal of 722657051971 is 179150756227.

It is a weak prime.

It is an emirp because it is prime and its reverse (179150756227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722657051971 - 2¹ = 722657051969 is a prime.

Together with 722657051969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (722657051951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361328525985 + 361328525986.

It is an arithmetic number, because the mean of its divisors is an integer number (361328525986).

Almost surely, 2^722657051971 is an apocalyptic number.

722657051971 is a deficient number, since it is larger than the sum of its proper divisors (1).

722657051971 is an equidigital number, since it uses as much as digits as its factorization.

722657051971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1852200, while the sum is 52.

The spelling of 722657051971 in words is "seven hundred twenty-two billion, six hundred fifty-seven million, fifty-one thousand, nine hundred seventy-one".