27790221351 has 32 divisors (see below), whose sum is σ = 41571878400. Its totient is φ = 16409779200.

The previous prime is 27790221323. The next prime is 27790221353. The reversal of 27790221351 is 15312209772.

It is not a de Polignac number, because 27790221351 - 2⁷ = 27790221223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27790221353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51355 + ... + 241283.

It is an arithmetic number, because the mean of its divisors is an integer number (1299121200).

Almost surely, 2^27790221351 is an apocalyptic number.

27790221351 is a deficient number, since it is larger than the sum of its proper divisors (13781657049).

27790221351 is a wasteful number, since it uses less digits than its factorization.

27790221351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190119.

The product of its (nonzero) digits is 52920, while the sum is 39.

The spelling of 27790221351 in words is "twenty-seven billion, seven hundred ninety million, two hundred twenty-one thousand, three hundred fifty-one".