12662661532 has 6 divisors (see below), whose sum is σ = 22159657688. Its totient is φ = 6331330764.

The previous prime is 12662661527. The next prime is 12662661547. The reversal of 12662661532 is 23516626621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1582832688 + ... + 1582832695.

Almost surely, 2^12662661532 is an apocalyptic number.

It is an amenable number.

12662661532 is a deficient number, since it is larger than the sum of its proper divisors (9496996156).

12662661532 is a wasteful number, since it uses less digits than its factorization.

12662661532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165665387 (or 3165665385 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The spelling of 12662661532 in words is "twelve billion, six hundred sixty-two million, six hundred sixty-one thousand, five hundred thirty-two".