90867291601 has 2 divisors, whose sum is σ = 90867291602. Its totient is φ = 90867291600.

The previous prime is 90867291569. The next prime is 90867291631. The reversal of 90867291601 is 10619276809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89999400001 + 867891600 = 299999^2 + 29460^2 .

It is a cyclic number.

It is not a de Polignac number, because 90867291601 - 2⁵ = 90867291569 is a prime.

It is not a weakly prime, because it can be changed into another prime (90867291631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45433645800 + 45433645801.

It is an arithmetic number, because the mean of its divisors is an integer number (45433645801).

Almost surely, 2^90867291601 is an apocalyptic number.

It is an amenable number.

90867291601 is a deficient number, since it is larger than the sum of its proper divisors (1).

90867291601 is an equidigital number, since it uses as much as digits as its factorization.

90867291601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 90867291601 in words is "ninety billion, eight hundred sixty-seven million, two hundred ninety-one thousand, six hundred one".