12662723557 has 8 divisors (see below), whose sum is σ = 13820394240. Its totient is φ = 11506138560.

The previous prime is 12662723537. The next prime is 12662723569. The reversal of 12662723557 is 75532726621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12662723557 - 2¹¹ = 12662721509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12662723537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246933 + ... + 293770.

It is an arithmetic number, because the mean of its divisors is an integer number (1727549280).

Almost surely, 2^12662723557 is an apocalyptic number.

It is an amenable number.

12662723557 is a deficient number, since it is larger than the sum of its proper divisors (1157670683).

12662723557 is a wasteful number, since it uses less digits than its factorization.

12662723557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542843.

The product of its digits is 1058400, while the sum is 46.

The spelling of 12662723557 in words is "twelve billion, six hundred sixty-two million, seven hundred twenty-three thousand, five hundred fifty-seven".