90238644461 has 16 divisors (see below), whose sum is σ = 107681904000. Its totient is φ = 75548620224.

The previous prime is 90238644439. The next prime is 90238644481. The reversal of 90238644461 is 16444683209.

It is not a de Polignac number, because 90238644461 - 2¹⁰ = 90238643437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90238644421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3044396 + ... + 3073893.

It is an arithmetic number, because the mean of its divisors is an integer number (6730119000).

Almost surely, 2^90238644461 is an apocalyptic number.

It is an amenable number.

90238644461 is a deficient number, since it is larger than the sum of its proper divisors (17443259539).

90238644461 is an equidigital number, since it uses as much as digits as its factorization.

90238644461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6118353 (or 6118339 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 90238644461 in words is "ninety billion, two hundred thirty-eight million, six hundred forty-four thousand, four hundred sixty-one".