12655137657 has 8 divisors (see below), whose sum is σ = 17417824000. Its totient is φ = 8164604880.

The previous prime is 12655137623. The next prime is 12655137673. The reversal of 12655137657 is 75673155621.

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

It is not a de Polignac number, because 12655137657 - 2¹¹ = 12655135609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12655137857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68038282 + ... + 68038467.

It is an arithmetic number, because the mean of its divisors is an integer number (2177228000).

Almost surely, 2^12655137657 is an apocalyptic number.

It is an amenable number.

12655137657 is a deficient number, since it is larger than the sum of its proper divisors (4762686343).

12655137657 is a wasteful number, since it uses less digits than its factorization.

12655137657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136076783.

The product of its digits is 1323000, while the sum is 48.

The spelling of 12655137657 in words is "twelve billion, six hundred fifty-five million, one hundred thirty-seven thousand, six hundred fifty-seven".