20781727614 has 24 divisors (see below), whose sum is σ = 45180763992. Its totient is φ = 6903598320.

The previous prime is 20781727583. The next prime is 20781727621. The reversal of 20781727614 is 41672718702.

20781727614 is a `hidden beast` number, since 2 + 0 + 7 + 8 + 1 + 7 + 27 + 614 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20781727614.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1964932 + ... + 1975479.

It is an arithmetic number, because the mean of its divisors is an integer number (1882531833).

Almost surely, 2^20781727614 is an apocalyptic number.

20781727614 is an abundant number, since it is smaller than the sum of its proper divisors (24399036378).

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

20781727614 is a wasteful number, since it uses less digits than its factorization.

20781727614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940712 (or 3940709 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The spelling of 20781727614 in words is "twenty billion, seven hundred eighty-one million, seven hundred twenty-seven thousand, six hundred fourteen".