90063808517 has 2 divisors, whose sum is σ = 90063808518. Its totient is φ = 90063808516.

The previous prime is 90063808489. The next prime is 90063808613. The reversal of 90063808517 is 71580836009.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78486263716 + 11577544801 = 280154^2 + 107599^2 .

It is a cyclic number.

It is not a de Polignac number, because 90063808517 - 2⁶ = 90063808453 is a prime.

It is a super-2 number, since 2×90063808517² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90063808217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45031904258 + 45031904259.

It is an arithmetic number, because the mean of its divisors is an integer number (45031904259).

Almost surely, 2^90063808517 is an apocalyptic number.

It is an amenable number.

90063808517 is a deficient number, since it is larger than the sum of its proper divisors (1).

90063808517 is an equidigital number, since it uses as much as digits as its factorization.

90063808517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 47.

The spelling of 90063808517 in words is "ninety billion, sixty-three million, eight hundred eight thousand, five hundred seventeen".