20884351815662 has 16 divisors (see below), whose sum is σ = 31428570225312. Its totient is φ = 10408164549120.

The previous prime is 20884351815647. The next prime is 20884351815667. The reversal of 20884351815662 is 26651815348802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20884351815667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14447798 + ... + 15827430.

It is an arithmetic number, because the mean of its divisors is an integer number (1964285639082).

Almost surely, 2^{20884351815662} is an apocalyptic number.

20884351815662 is a deficient number, since it is larger than the sum of its proper divisors (10544218409650).

20884351815662 is a wasteful number, since it uses less digits than its factorization.

20884351815662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404283.

The product of its (nonzero) digits is 22118400, while the sum is 59.

The spelling of 20884351815662 in words is "twenty trillion, eight hundred eighty-four billion, three hundred fifty-one million, eight hundred fifteen thousand, six hundred sixty-two".