126001605000 has 160 divisors (see below), whose sum is σ = 394382007360. Its totient is φ = 33536160000.

The previous prime is 126001604983. The next prime is 126001605017. The reversal of 126001605000 is 506100621.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (126001604983) and next prime (126001605017).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8107237 + ... + 8122763.

It is an arithmetic number, because the mean of its divisors is an integer number (2464887546).

Almost surely, 2^126001605000 is an apocalyptic number.

126001605000 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 126001605000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197191003680).

126001605000 is an abundant number, since it is smaller than the sum of its proper divisors (268380402360).

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

126001605000 is a wasteful number, since it uses less digits than its factorization.

126001605000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16097 (or 16078 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 126001605000 its reverse (506100621), we get a palindrome (126507705621).

The spelling of 126001605000 in words is "one hundred twenty-six billion, one million, six hundred five thousand".