2372521661 has 2 divisors, whose sum is σ = 2372521662. Its totient is φ = 2372521660.

The previous prime is 2372521651. The next prime is 2372521693. The reversal of 2372521661 is 1661252732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1281210436 + 1091311225 = 35794^2 + 33035^2 .

It is a cyclic number.

It is not a de Polignac number, because 2372521661 - 2⁶ = 2372521597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2372521631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1186260830 + 1186260831.

It is an arithmetic number, because the mean of its divisors is an integer number (1186260831).

Almost surely, 2^2372521661 is an apocalyptic number.

It is an amenable number.

2372521661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2372521661 is an equidigital number, since it uses as much as digits as its factorization.

2372521661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 2372521661 is about 48708.5378655529. The cubic root of 2372521661 is about 1333.7365783592.

The spelling of 2372521661 in words is "two billion, three hundred seventy-two million, five hundred twenty-one thousand, six hundred sixty-one".