90652321538 has 16 divisors (see below), whose sum is σ = 142060151160. Its totient is φ = 43329888000.

The previous prime is 90652321537. The next prime is 90652321541. The reversal of 90652321538 is 83512325609.

It can be written as a sum of positive squares in 4 ways, for example, as 82847835889 + 7804485649 = 287833^2 + 88343^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90652321537) 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, 7731623 + ... + 7743338.

Almost surely, 2^90652321538 is an apocalyptic number.

90652321538 is a deficient number, since it is larger than the sum of its proper divisors (51407829622).

90652321538 is a wasteful number, since it uses less digits than its factorization.

90652321538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15475093.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 90652321538 in words is "ninety billion, six hundred fifty-two million, three hundred twenty-one thousand, five hundred thirty-eight".