12477783112 has 8 divisors (see below), whose sum is σ = 23395843350. Its totient is φ = 6238891552.

The previous prime is 12477783077. The next prime is 12477783119. The reversal of 12477783112 is 21138777421.

It can be written as a sum of positive squares in only one way, i.e., 11128984036 + 1348799076 = 105494^2 + 36726^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×12477783112² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12477783119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 779861437 + ... + 779861452.

Almost surely, 2^12477783112 is an apocalyptic number.

It is an amenable number.

12477783112 is a deficient number, since it is larger than the sum of its proper divisors (10918060238).

12477783112 is a wasteful number, since it uses less digits than its factorization.

12477783112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559722895 (or 1559722891 counting only the distinct ones).

The product of its digits is 131712, while the sum is 43.

The spelling of 12477783112 in words is "twelve billion, four hundred seventy-seven million, seven hundred eighty-three thousand, one hundred twelve".