21374267204474 has 16 divisors (see below), whose sum is σ = 33186238422120. Its totient is φ = 10312615998720.

The previous prime is 21374267204449. The next prime is 21374267204497. The reversal of 21374267204474 is 47440276247312.

It can be written as a sum of positive squares in 4 ways, for example, as 15647507110249 + 5726760094225 = 3955693^2 + 2393065^2 .

It is a super-3 number, since 3×21374267204474³ (a number of 41 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 106966379 + ... + 107166014.

Almost surely, 2^{21374267204474} is an apocalyptic number.

21374267204474 is a deficient number, since it is larger than the sum of its proper divisors (11811971217646).

21374267204474 is a wasteful number, since it uses less digits than its factorization.

21374267204474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214134145.

The product of its (nonzero) digits is 12644352, while the sum is 53.

The spelling of 21374267204474 in words is "twenty-one trillion, three hundred seventy-four billion, two hundred sixty-seven million, two hundred four thousand, four hundred seventy-four".