90506208806 has 32 divisors (see below), whose sum is σ = 153919970400. Its totient is φ = 39567709440.

The previous prime is 90506208797. The next prime is 90506208817. The reversal of 90506208806 is 60880260509.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6330386 + ... + 6344666.

It is an arithmetic number, because the mean of its divisors is an integer number (4809999075).

Almost surely, 2^90506208806 is an apocalyptic number.

90506208806 is a deficient number, since it is larger than the sum of its proper divisors (63413761594).

90506208806 is a wasteful number, since it uses less digits than its factorization.

90506208806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27144.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 90506208806 in words is "ninety billion, five hundred six million, two hundred eight thousand, eight hundred six".