63211325405666 has 32 divisors (see below), whose sum is σ = 98162045184000. Its totient is φ = 30496622005440.

The previous prime is 63211325405647. The next prime is 63211325405689. The reversal of 63211325405666 is 66650452311236.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394229120 + ... + 394389428.

It is an arithmetic number, because the mean of its divisors is an integer number (3067563912000).

Almost surely, 2^{63211325405666} is an apocalyptic number.

63211325405666 is a deficient number, since it is larger than the sum of its proper divisors (34950719778334).

63211325405666 is a wasteful number, since it uses less digits than its factorization.

63211325405666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178914.

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 63211325405666 in words is "sixty-three trillion, two hundred eleven billion, three hundred twenty-five million, four hundred five thousand, six hundred sixty-six".