21174667340 has 12 divisors (see below), whose sum is σ = 44466801456. Its totient is φ = 8469866928.

The previous prime is 21174667303. The next prime is 21174667361. The reversal of 21174667340 is 4376647112.

It is a super-3 number, since 3×21174667340³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529366664 + ... + 529366703.

It is an arithmetic number, because the mean of its divisors is an integer number (3705566788).

Almost surely, 2^21174667340 is an apocalyptic number.

21174667340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21174667340 is an abundant number, since it is smaller than the sum of its proper divisors (23292134116).

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

21174667340 is a wasteful number, since it uses less digits than its factorization.

21174667340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058733376 (or 1058733374 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 21174667340 in words is "twenty-one billion, one hundred seventy-four million, six hundred sixty-seven thousand, three hundred forty".