90806622357047 has 2 divisors, whose sum is σ = 90806622357048. Its totient is φ = 90806622357046.

The previous prime is 90806622356993. The next prime is 90806622357109. The reversal of 90806622357047 is 74075322660809.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90806622357047 - 2¹² = 90806622352951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90806622357547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45403311178523 + 45403311178524.

It is an arithmetic number, because the mean of its divisors is an integer number (45403311178524).

Almost surely, 2^{90806622357047} is an apocalyptic number.

90806622357047 is a deficient number, since it is larger than the sum of its proper divisors (1).

90806622357047 is an equidigital number, since it uses as much as digits as its factorization.

90806622357047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 90806622357047 in words is "ninety trillion, eight hundred six billion, six hundred twenty-two million, three hundred fifty-seven thousand, forty-seven".