12655331601 has 16 divisors (see below), whose sum is σ = 18413683968. Its totient is φ = 7667427600.

The previous prime is 12655331581. The next prime is 12655331603. The reversal of 12655331601 is 10613355621.

It is not a de Polignac number, because 12655331601 - 2⁷ = 12655331473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (12655331603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45006 + ... + 165336.

It is an arithmetic number, because the mean of its divisors is an integer number (1150855248).

Almost surely, 2^12655331601 is an apocalyptic number.

12655331601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12655331601 is a deficient number, since it is larger than the sum of its proper divisors (5758352367).

12655331601 is a wasteful number, since it uses less digits than its factorization.

12655331601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123532.

The product of its (nonzero) digits is 16200, while the sum is 33.

The spelling of 12655331601 in words is "twelve billion, six hundred fifty-five million, three hundred thirty-one thousand, six hundred one".