90520886093 has 4 divisors (see below), whose sum is σ = 98750057568. Its totient is φ = 82291714620.

The previous prime is 90520886087. The next prime is 90520886107. The reversal of 90520886093 is 39068802509.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39068802509 = 11 ⋅3551709319.

It is a cyclic number.

It is not a de Polignac number, because 90520886093 - 2¹⁰ = 90520885069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90520886083) 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, 4114585721 + ... + 4114585742.

It is an arithmetic number, because the mean of its divisors is an integer number (24687514392).

Almost surely, 2^90520886093 is an apocalyptic number.

It is an amenable number.

90520886093 is a deficient number, since it is larger than the sum of its proper divisors (8229171475).

90520886093 is a wasteful number, since it uses less digits than its factorization.

90520886093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8229171474.

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 90520886093 in words is "ninety billion, five hundred twenty million, eight hundred eighty-six thousand, ninety-three".