21167465673426 has 16 divisors (see below), whose sum is σ = 42348215015904. Its totient is φ = 7053607946304.

The previous prime is 21167465673373. The next prime is 21167465673439. The reversal of 21167465673426 is 62437656476112.

It is a self number, because there is not a number n which added to its sum of digits gives 21167465673426.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 553465495 + ... + 553503738.

It is an arithmetic number, because the mean of its divisors is an integer number (2646763438494).

Almost surely, 2^{21167465673426} is an apocalyptic number.

21167465673426 is an abundant number, since it is smaller than the sum of its proper divisors (21180749342478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21167465673426 is a wasteful number, since it uses less digits than its factorization.

21167465673426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106972425.

The product of its digits is 60963840, while the sum is 60.

The spelling of 21167465673426 in words is "twenty-one trillion, one hundred sixty-seven billion, four hundred sixty-five million, six hundred seventy-three thousand, four hundred twenty-six".