27773518121 has 16 divisors (see below), whose sum is σ = 28749651840. Its totient is φ = 26812030080.

The previous prime is 27773518093. The next prime is 27773518133. The reversal of 27773518121 is 12181537772.

It is a cyclic number.

It is not a de Polignac number, because 27773518121 - 2⁶ = 27773518057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27773518151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9850850 + ... + 9853668.

It is an arithmetic number, because the mean of its divisors is an integer number (1796853240).

Almost surely, 2^27773518121 is an apocalyptic number.

It is an amenable number.

27773518121 is a deficient number, since it is larger than the sum of its proper divisors (976133719).

27773518121 is a wasteful number, since it uses less digits than its factorization.

27773518121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5296.

The product of its digits is 164640, while the sum is 44.

The spelling of 27773518121 in words is "twenty-seven billion, seven hundred seventy-three million, five hundred eighteen thousand, one hundred twenty-one".