12655304550 has 72 divisors (see below), whose sum is σ = 38857820976. Its totient is φ = 2892640320.

The previous prime is 12655304531. The next prime is 12655304569. The reversal of 12655304550 is 5540355621.

12655304550 is a `hidden beast` number, since 1 + 26 + 55 + 30 + 4 + 550 = 666.

It is an interprime number because it is at equal distance from previous prime (12655304531) and next prime (12655304569).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2005629 + ... + 2011928.

It is an arithmetic number, because the mean of its divisors is an integer number (539691958).

Almost surely, 2^12655304550 is an apocalyptic number.

12655304550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12655304550 is an abundant number, since it is smaller than the sum of its proper divisors (26202516426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12655304550 is a wasteful number, since it uses less digits than its factorization.

12655304550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4017582 (or 4017574 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 12655304550 in words is "twelve billion, six hundred fifty-five million, three hundred four thousand, five hundred fifty".