90016221871412 has 24 divisors (see below), whose sum is σ = 157881042837000. Its totient is φ = 44907354791936.

The previous prime is 90016221871403. The next prime is 90016221871417. The reversal of 90016221871412 is 21417812261009.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28079888510116 + 61936333361296 = 5299046^2 + 7869964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90016221871417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192061868 + ... + 192529980.

It is an arithmetic number, because the mean of its divisors is an integer number (6578376784875).

Almost surely, 2^{90016221871412} is an apocalyptic number.

It is an amenable number.

90016221871412 is a deficient number, since it is larger than the sum of its proper divisors (67864820965588).

90016221871412 is a wasteful number, since it uses less digits than its factorization.

90016221871412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575635 (or 575633 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The spelling of 90016221871412 in words is "ninety trillion, sixteen billion, two hundred twenty-one million, eight hundred seventy-one thousand, four hundred twelve".