12951666632 has 8 divisors (see below), whose sum is σ = 24284374950. Its totient is φ = 6475833312.

The previous prime is 12951666601. The next prime is 12951666641. The reversal of 12951666632 is 23666615921.

It can be written as a sum of positive squares in only one way, i.e., 10944088996 + 2007577636 = 104614^2 + 44806^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809479157 + ... + 809479172.

Almost surely, 2^12951666632 is an apocalyptic number.

It is an amenable number.

12951666632 is a deficient number, since it is larger than the sum of its proper divisors (11332708318).

12951666632 is a wasteful number, since it uses less digits than its factorization.

12951666632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618958335 (or 1618958331 counting only the distinct ones).

The product of its digits is 699840, while the sum is 47.

The spelling of 12951666632 in words is "twelve billion, nine hundred fifty-one million, six hundred sixty-six thousand, six hundred thirty-two".