12051574775 has 12 divisors (see below), whose sum is σ = 14948262000. Its totient is φ = 9638479680.

The previous prime is 12051574729. The next prime is 12051574781. The reversal of 12051574775 is 57747515021.

It is a de Polignac number, because none of the positive numbers 2^k-12051574775 is a prime.

It is a super-3 number, since 3×12051574775³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21251 + ... + 156699.

It is an arithmetic number, because the mean of its divisors is an integer number (1245688500).

Almost surely, 2^12051574775 is an apocalyptic number.

12051574775 is a deficient number, since it is larger than the sum of its proper divisors (2896687225).

12051574775 is a wasteful number, since it uses less digits than its factorization.

12051574775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139018 (or 139013 counting only the distinct ones).

The product of its (nonzero) digits is 343000, while the sum is 44.

The spelling of 12051574775 in words is "twelve billion, fifty-one million, five hundred seventy-four thousand, seven hundred seventy-five".