21167667074 has 8 divisors (see below), whose sum is σ = 31757970240. Its totient is φ = 10581676996.

The previous prime is 21167667049. The next prime is 21167667109. The reversal of 21167667074 is 47076676112.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1065974 + ... + 1085649.

It is an arithmetic number, because the mean of its divisors is an integer number (3969746280).

Almost surely, 2^21167667074 is an apocalyptic number.

21167667074 is a deficient number, since it is larger than the sum of its proper divisors (10590303166).

21167667074 is a wasteful number, since it uses less digits than its factorization.

21167667074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156544.

The product of its (nonzero) digits is 592704, while the sum is 47.

The spelling of 21167667074 in words is "twenty-one billion, one hundred sixty-seven million, six hundred sixty-seven thousand, seventy-four".