90454902268193 has 8 divisors (see below), whose sum is σ = 90486093659688. Its totient is φ = 90423712963584.

The previous prime is 90454902268139. The next prime is 90454902268201. The reversal of 90454902268193 is 39186220945409.

It can be written as a sum of positive squares in 4 ways, for example, as 44344718227489 + 46110184040704 = 6659183^2 + 6790448^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90454902268193 - 2²⁶ = 90454835159329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90454902268123) 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 in 7 ways as a sum of consecutive naturals, for example, 88811255 + ... + 89823987.

It is an arithmetic number, because the mean of its divisors is an integer number (11310761707461).

Almost surely, 2^{90454902268193} is an apocalyptic number.

It is an amenable number.

90454902268193 is a deficient number, since it is larger than the sum of its proper divisors (31191391495).

90454902268193 is a wasteful number, since it uses less digits than its factorization.

90454902268193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043443.

The product of its (nonzero) digits is 33592320, while the sum is 62.

The spelling of 90454902268193 in words is "ninety trillion, four hundred fifty-four billion, nine hundred two million, two hundred sixty-eight thousand, one hundred ninety-three".