21146605376704 has 28 divisors (see below), whose sum is σ = 41963121207448. Its totient is φ = 10573220505600.

The previous prime is 21146605376653. The next prime is 21146605376711. The reversal of 21146605376704 is 40767350664112.

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 3 ways as a sum of consecutive naturals, for example, 7477639 + ... + 9910009.

It is an arithmetic number, because the mean of its divisors is an integer number (1498682900266).

Almost surely, 2^{21146605376704} is an apocalyptic number.

It is an amenable number.

21146605376704 is a deficient number, since it is larger than the sum of its proper divisors (20816515830744).

21146605376704 is a wasteful number, since it uses less digits than its factorization.

21146605376704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568224 (or 2568214 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 52.

The spelling of 21146605376704 in words is "twenty-one trillion, one hundred forty-six billion, six hundred five million, three hundred seventy-six thousand, seven hundred four".