90450611105473 has 2 divisors, whose sum is σ = 90450611105474. Its totient is φ = 90450611105472.

The previous prime is 90450611105417. The next prime is 90450611105489. The reversal of 90450611105473 is 37450111605409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82681776074304 + 7768835031169 = 9092952^2 + 2787263^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90450611105473 is a prime.

It is not a weakly prime, because it can be changed into another prime (90450611109473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45225305552736 + 45225305552737.

It is an arithmetic number, because the mean of its divisors is an integer number (45225305552737).

Almost surely, 2^{90450611105473} is an apocalyptic number.

It is an amenable number.

90450611105473 is a deficient number, since it is larger than the sum of its proper divisors (1).

90450611105473 is an equidigital number, since it uses as much as digits as its factorization.

90450611105473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 90450611105473 in words is "ninety trillion, four hundred fifty billion, six hundred eleven million, one hundred five thousand, four hundred seventy-three".