7742722073 has 2 divisors, whose sum is σ = 7742722074. Its totient is φ = 7742722072.

The previous prime is 7742722061. The next prime is 7742722079. The reversal of 7742722073 is 3702272477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5649476569 + 2093245504 = 75163^2 + 45752^2 .

It is an emirp because it is prime and its reverse (3702272477) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7742722073 - 2¹² = 7742717977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7742722073.

It is not a weakly prime, because it can be changed into another prime (7742722079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3871361036 + 3871361037.

It is an arithmetic number, because the mean of its divisors is an integer number (3871361037).

Almost surely, 2^7742722073 is an apocalyptic number.

It is an amenable number.

7742722073 is a deficient number, since it is larger than the sum of its proper divisors (1).

7742722073 is an equidigital number, since it uses as much as digits as its factorization.

7742722073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230496, while the sum is 41.

The square root of 7742722073 is about 87992.7387515584. The cubic root of 7742722073 is about 1978.3261431671.

The spelling of 7742722073 in words is "seven billion, seven hundred forty-two million, seven hundred twenty-two thousand, seventy-three".