16206222491 has 2 divisors, whose sum is σ = 16206222492. Its totient is φ = 16206222490.

The previous prime is 16206222469. The next prime is 16206222541. The reversal of 16206222491 is 19422260261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16206222491 - 2²² = 16202028187 is a prime.

It is not a weakly prime, because it can be changed into another prime (16206222091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8103111245 + 8103111246.

It is an arithmetic number, because the mean of its divisors is an integer number (8103111246).

Almost surely, 2^16206222491 is an apocalyptic number.

16206222491 is a deficient number, since it is larger than the sum of its proper divisors (1).

16206222491 is an equidigital number, since it uses as much as digits as its factorization.

16206222491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 16206222491 in words is "sixteen billion, two hundred six million, two hundred twenty-two thousand, four hundred ninety-one".