21879491614 has 8 divisors (see below), whose sum is σ = 32824635048. Its totient is φ = 10937946600.

The previous prime is 21879491611. The next prime is 21879491633. The reversal of 21879491614 is 41619497812.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21879491611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884352 + ... + 908755.

It is an arithmetic number, because the mean of its divisors is an integer number (4103079381).

Almost surely, 2^21879491614 is an apocalyptic number.

21879491614 is a deficient number, since it is larger than the sum of its proper divisors (10945143434).

21879491614 is a wasteful number, since it uses less digits than its factorization.

21879491614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799210.

The product of its digits is 870912, while the sum is 52.

The spelling of 21879491614 in words is "twenty-one billion, eight hundred seventy-nine million, four hundred ninety-one thousand, six hundred fourteen".