2661351226006 has 32 divisors (see below), whose sum is σ = 4623675789312. Its totient is φ = 1135443615360.

The previous prime is 2661351225977. The next prime is 2661351226031. The reversal of 2661351226006 is 6006221531662.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2661351226006.

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 15 ways as a sum of consecutive naturals, for example, 9557446 + ... + 9831961.

It is an arithmetic number, because the mean of its divisors is an integer number (144489868416).

Almost surely, 2^{2661351226006} is an apocalyptic number.

2661351226006 is a deficient number, since it is larger than the sum of its proper divisors (1962324563306).

2661351226006 is a wasteful number, since it uses less digits than its factorization.

2661351226006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19389804.

The product of its (nonzero) digits is 155520, while the sum is 40.

Adding to 2661351226006 its reverse (6006221531662), we get a palindrome (8667572757668).

The spelling of 2661351226006 in words is "two trillion, six hundred sixty-one billion, three hundred fifty-one million, two hundred twenty-six thousand, six".