21167052206707 has 8 divisors (see below), whose sum is σ = 23170139682480. Its totient is φ = 19177099731360.

The previous prime is 21167052206693. The next prime is 21167052206749. The reversal of 21167052206707 is 70760225076112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21167052206707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21167052206777) by changing a digit.

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, 3283746732 + ... + 3283753177.

It is an arithmetic number, because the mean of its divisors is an integer number (2896267460310).

Almost surely, 2^{21167052206707} is an apocalyptic number.

21167052206707 is a deficient number, since it is larger than the sum of its proper divisors (2003087475773).

21167052206707 is a wasteful number, since it uses less digits than its factorization.

21167052206707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6567500213.

The product of its (nonzero) digits is 493920, while the sum is 46.

The spelling of 21167052206707 in words is "twenty-one trillion, one hundred sixty-seven billion, fifty-two million, two hundred six thousand, seven hundred seven".