90010109873 has 2 divisors, whose sum is σ = 90010109874. Its totient is φ = 90010109872.

The previous prime is 90010109863. The next prime is 90010109879. The reversal of 90010109873 is 37890101009.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77188397584 + 12821712289 = 277828^2 + 113233^2 .

It is an emirp because it is prime and its reverse (37890101009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90010109873 - 2¹² = 90010105777 is a prime.

It is a super-2 number, since 2×90010109873² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90010109879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45005054936 + 45005054937.

It is an arithmetic number, because the mean of its divisors is an integer number (45005054937).

Almost surely, 2^90010109873 is an apocalyptic number.

It is an amenable number.

90010109873 is a deficient number, since it is larger than the sum of its proper divisors (1).

90010109873 is an equidigital number, since it uses as much as digits as its factorization.

90010109873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 38.

The spelling of 90010109873 in words is "ninety billion, ten million, one hundred nine thousand, eight hundred seventy-three".