646001611126 has 16 divisors (see below), whose sum is σ = 991569381264. Its totient is φ = 315478969344.

The previous prime is 646001611109. The next prime is 646001611163. The reversal of 646001611126 is 621116100646.

It is a junction number, because it is equal to n+sod(n) for n = 646001611091 and 646001611100.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3030150 + ... + 3236326.

It is an arithmetic number, because the mean of its divisors is an integer number (61973086329).

Almost surely, 2^646001611126 is an apocalyptic number.

646001611126 is a deficient number, since it is larger than the sum of its proper divisors (345567770138).

646001611126 is a wasteful number, since it uses less digits than its factorization.

646001611126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242655.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 646001611126 in words is "six hundred forty-six billion, one million, six hundred eleven thousand, one hundred twenty-six".