21639778830114 has 16 divisors (see below), whose sum is σ = 43382359464960. Its totient is φ = 7196125975920.

The previous prime is 21639778830107. The next prime is 21639778830149. The reversal of 21639778830114 is 41103887793612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4283405794 + ... + 4283410845.

It is an arithmetic number, because the mean of its divisors is an integer number (2711397466560).

Almost surely, 2^{21639778830114} is an apocalyptic number.

21639778830114 is an abundant number, since it is smaller than the sum of its proper divisors (21742580634846).

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

21639778830114 is a wasteful number, since it uses less digits than its factorization.

21639778830114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8566817065.

The product of its (nonzero) digits is 12192768, while the sum is 60.

The spelling of 21639778830114 in words is "twenty-one trillion, six hundred thirty-nine billion, seven hundred seventy-eight million, eight hundred thirty thousand, one hundred fourteen".