90306035206138 has 8 divisors (see below), whose sum is σ = 137679693019380. Its totient is φ = 44412804199680.

The previous prime is 90306035206097. The next prime is 90306035206139. The reversal of 90306035206138 is 83160253060309.

It can be written as a sum of positive squares in 2 ways, for example, as 77026548531529 + 13279486674609 = 8776477^2 + 3644103^2 .

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

It is not an unprimeable number, because it can be changed into a prime (90306035206139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370106701543 + ... + 370106701786.

Almost surely, 2^{90306035206138} is an apocalyptic number.

90306035206138 is a deficient number, since it is larger than the sum of its proper divisors (47373657813242).

90306035206138 is a wasteful number, since it uses less digits than its factorization.

90306035206138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740213403392.

The product of its (nonzero) digits is 699840, while the sum is 46.

The spelling of 90306035206138 in words is "ninety trillion, three hundred six billion, thirty-five million, two hundred six thousand, one hundred thirty-eight".