12956629352 has 8 divisors (see below), whose sum is σ = 24293680050. Its totient is φ = 6478314672.

The previous prime is 12956629351. The next prime is 12956629363. The reversal of 12956629352 is 25392665921.

It can be written as a sum of positive squares in only one way, i.e., 6719736676 + 6236892676 = 81974^2 + 78974^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 12956629352.

It is not an unprimeable number, because it can be changed into a prime (12956629351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809789327 + ... + 809789342.

Almost surely, 2^12956629352 is an apocalyptic number.

It is an amenable number.

12956629352 is a deficient number, since it is larger than the sum of its proper divisors (11337050698).

12956629352 is a wasteful number, since it uses less digits than its factorization.

12956629352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619578675 (or 1619578671 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 50.

The spelling of 12956629352 in words is "twelve billion, nine hundred fifty-six million, six hundred twenty-nine thousand, three hundred fifty-two".