21278426914 has 8 divisors (see below), whose sum is σ = 33597516240. Its totient is φ = 10079254836.

The previous prime is 21278426899. The next prime is 21278426927. The reversal of 21278426914 is 41962487212.

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

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, 279979264 + ... + 279979339.

It is an arithmetic number, because the mean of its divisors is an integer number (4199689530).

Almost surely, 2^21278426914 is an apocalyptic number.

21278426914 is a deficient number, since it is larger than the sum of its proper divisors (12319089326).

21278426914 is a wasteful number, since it uses less digits than its factorization.

21278426914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559958624.

The product of its digits is 387072, while the sum is 46.

The spelling of 21278426914 in words is "twenty-one billion, two hundred seventy-eight million, four hundred twenty-six thousand, nine hundred fourteen".