12655623949 has 8 divisors (see below), whose sum is σ = 13344186240. Its totient is φ = 11969309376.

The previous prime is 12655623931. The next prime is 12655623989. The reversal of 12655623949 is 94932655621.

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 12655623949 - 2¹³ = 12655615757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12655623896 and 12655623905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12655623919) 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, 550357 + ... + 572890.

It is an arithmetic number, because the mean of its divisors is an integer number (1668023280).

Almost surely, 2^12655623949 is an apocalyptic number.

12655623949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12655623949 is a deficient number, since it is larger than the sum of its proper divisors (688562291).

12655623949 is a wasteful number, since it uses less digits than its factorization.

12655623949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123859.

The product of its digits is 3499200, while the sum is 52.

The spelling of 12655623949 in words is "twelve billion, six hundred fifty-five million, six hundred twenty-three thousand, nine hundred forty-nine".