21134399974 has 8 divisors (see below), whose sum is σ = 31714615728. Its totient is φ = 10562861400.

The previous prime is 21134399969. The next prime is 21134399989. The reversal of 21134399974 is 47999343112.

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

It is a super-2 number, since 2×21134399974² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2163202 + ... + 2172949.

It is an arithmetic number, because the mean of its divisors is an integer number (3964326966).

Almost surely, 2^21134399974 is an apocalyptic number.

21134399974 is a deficient number, since it is larger than the sum of its proper divisors (10580215754).

21134399974 is a wasteful number, since it uses less digits than its factorization.

21134399974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338590.

The product of its digits is 1469664, while the sum is 52.

The spelling of 21134399974 in words is "twenty-one billion, one hundred thirty-four million, three hundred ninety-nine thousand, nine hundred seventy-four".