90197608315811 has 2 divisors, whose sum is σ = 90197608315812. Its totient is φ = 90197608315810.

The previous prime is 90197608315747. The next prime is 90197608315907. The reversal of 90197608315811 is 11851380679109.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90197608315811 - 2⁶ = 90197608315747 is a prime.

It is not a weakly prime, because it can be changed into another prime (90197608312811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45098804157905 + 45098804157906.

It is an arithmetic number, because the mean of its divisors is an integer number (45098804157906).

Almost surely, 2^{90197608315811} is an apocalyptic number.

90197608315811 is a deficient number, since it is larger than the sum of its proper divisors (1).

90197608315811 is an equidigital number, since it uses as much as digits as its factorization.

90197608315811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 59.

The spelling of 90197608315811 in words is "ninety trillion, one hundred ninety-seven billion, six hundred eight million, three hundred fifteen thousand, eight hundred eleven".