20837928894 has 16 divisors (see below), whose sum is σ = 41682762000. Its totient is φ = 6944825600.

The previous prime is 20837928889. The next prime is 20837929001. The reversal of 20837928894 is 49882973802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248019 + ... + 321230.

It is an arithmetic number, because the mean of its divisors is an integer number (2605172625).

Almost surely, 2^20837928894 is an apocalyptic number.

20837928894 is an abundant number, since it is smaller than the sum of its proper divisors (20844833106).

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

20837928894 is a wasteful number, since it uses less digits than its factorization.

20837928894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575355.

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 20837928894 in words is "twenty billion, eight hundred thirty-seven million, nine hundred twenty-eight thousand, eight hundred ninety-four".