90806227773 has 4 divisors (see below), whose sum is σ = 121074970368. Its totient is φ = 60537485180.

The previous prime is 90806227751. The next prime is 90806227819. The reversal of 90806227773 is 37772260809.

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.

It is a cyclic number.

It is not a de Polignac number, because 90806227773 - 2¹⁷ = 90806096701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90806227723) 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, 15134371293 + ... + 15134371298.

It is an arithmetic number, because the mean of its divisors is an integer number (30268742592).

Almost surely, 2^90806227773 is an apocalyptic number.

It is an amenable number.

90806227773 is a deficient number, since it is larger than the sum of its proper divisors (30268742595).

90806227773 is a wasteful number, since it uses less digits than its factorization.

90806227773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30268742594.

The product of its (nonzero) digits is 1778112, while the sum is 51.

The spelling of 90806227773 in words is "ninety billion, eight hundred six million, two hundred twenty-seven thousand, seven hundred seventy-three".