90043104061 has 2 divisors, whose sum is σ = 90043104062. Its totient is φ = 90043104060.

The previous prime is 90043104049. The next prime is 90043104097. The reversal of 90043104061 is 16040134009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82293823161 + 7749280900 = 286869^2 + 88030^2 .

It is a cyclic number.

It is not a de Polignac number, because 90043104061 - 2⁷ = 90043103933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90043104461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45021552030 + 45021552031.

It is an arithmetic number, because the mean of its divisors is an integer number (45021552031).

Almost surely, 2^90043104061 is an apocalyptic number.

It is an amenable number.

90043104061 is a deficient number, since it is larger than the sum of its proper divisors (1).

90043104061 is an equidigital number, since it uses as much as digits as its factorization.

90043104061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 90043104061 in words is "ninety billion, forty-three million, one hundred four thousand, sixty-one".