20828820694 has 12 divisors (see below), whose sum is σ = 34341733692. Its totient is φ = 9467645660.

The previous prime is 20828820673. The next prime is 20828820757. The reversal of 20828820694 is 49602882802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43034512 + ... + 43034995.

It is an arithmetic number, because the mean of its divisors is an integer number (2861811141).

Almost surely, 2^20828820694 is an apocalyptic number.

20828820694 is a deficient number, since it is larger than the sum of its proper divisors (13512912998).

20828820694 is a wasteful number, since it uses less digits than its factorization.

20828820694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86069531 (or 86069520 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 20828820694 in words is "twenty billion, eight hundred twenty-eight million, eight hundred twenty thousand, six hundred ninety-four".