21088494581674 has 8 divisors (see below), whose sum is σ = 34066029708900. Its totient is φ = 9733151345376.

The previous prime is 21088494581659. The next prime is 21088494581711. The reversal of 21088494581674 is 47618549488012.

It can be written as a sum of positive squares in 2 ways, for example, as 20788064528449 + 300430053225 = 4559393^2 + 548115^2 .

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 (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405547972699 + ... + 405547972750.

Almost surely, 2^{21088494581674} is an apocalyptic number.

21088494581674 is a deficient number, since it is larger than the sum of its proper divisors (12977535127226).

21088494581674 is a wasteful number, since it uses less digits than its factorization.

21088494581674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811095945464.

The product of its (nonzero) digits is 123863040, while the sum is 67.

The spelling of 21088494581674 in words is "twenty-one trillion, eighty-eight billion, four hundred ninety-four million, five hundred eighty-one thousand, six hundred seventy-four".