90345918041 has 2 divisors, whose sum is σ = 90345918042. Its totient is φ = 90345918040.

The previous prime is 90345918017. The next prime is 90345918067. The reversal of 90345918041 is 14081954309.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90227543641 + 118374400 = 300379^2 + 10880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90345918041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90345917983 and 90345918001.

It is not a weakly prime, because it can be changed into another prime (90345918841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45172959020 + 45172959021.

It is an arithmetic number, because the mean of its divisors is an integer number (45172959021).

Almost surely, 2^90345918041 is an apocalyptic number.

It is an amenable number.

90345918041 is a deficient number, since it is larger than the sum of its proper divisors (1).

90345918041 is an equidigital number, since it uses as much as digits as its factorization.

90345918041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 90345918041 in words is "ninety billion, three hundred forty-five million, nine hundred eighteen thousand, forty-one".