72022166510461 has 2 divisors, whose sum is σ = 72022166510462. Its totient is φ = 72022166510460.

The previous prime is 72022166510449. The next prime is 72022166510471. The reversal of 72022166510461 is 16401566122027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42436508377561 + 29585658132900 = 6514331^2 + 5439270^2 .

It is an emirp because it is prime and its reverse (16401566122027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72022166510461 - 2³⁷ = 71884727556989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72022166510471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36011083255230 + 36011083255231.

It is an arithmetic number, because the mean of its divisors is an integer number (36011083255231).

Almost surely, 2^{72022166510461} is an apocalyptic number.

It is an amenable number.

72022166510461 is a deficient number, since it is larger than the sum of its proper divisors (1).

72022166510461 is an equidigital number, since it uses as much as digits as its factorization.

72022166510461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 72022166510461 in words is "seventy-two trillion, twenty-two billion, one hundred sixty-six million, five hundred ten thousand, four hundred sixty-one".