12601655000 has 320 divisors, whose sum is σ = 35088768000. Its totient is φ = 4190400000.

The previous prime is 12601654997. The next prime is 12601655063. The reversal of 12601655000 is 55610621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 32394806 + ... + 32395194.

It is an arithmetic number, because the mean of its divisors is an integer number (109652400).

Almost surely, 2^12601655000 is an apocalyptic number.

12601655000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12601655000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17544384000).

12601655000 is an abundant number, since it is smaller than the sum of its proper divisors (22487113000).

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

12601655000 is a wasteful number, since it uses less digits than its factorization.

12601655000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 12601655000 in words is "twelve billion, six hundred one million, six hundred fifty-five thousand".