12646035477352 has 8 divisors (see below), whose sum is σ = 23711316520050. Its totient is φ = 6323017738672.

The previous prime is 12646035477337. The next prime is 12646035477359. The reversal of 12646035477352 is 25377453064621.

It can be written as a sum of positive squares in only one way, i.e., 10996028432676 + 1650007044676 = 3316026^2 + 1284526^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12646035477293 and 12646035477302.

It is not an unprimeable number, because it can be changed into a prime (12646035477359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 790377217327 + ... + 790377217342.

Almost surely, 2^{12646035477352} is an apocalyptic number.

It is an amenable number.

12646035477352 is a deficient number, since it is larger than the sum of its proper divisors (11065281042698).

12646035477352 is a wasteful number, since it uses less digits than its factorization.

12646035477352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580754434675 (or 1580754434671 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 55.

The spelling of 12646035477352 in words is "twelve trillion, six hundred forty-six billion, thirty-five million, four hundred seventy-seven thousand, three hundred fifty-two".