20916942801 has 8 divisors (see below), whose sum is σ = 27894402720. Its totient is φ = 13942055712.

The previous prime is 20916942793. The next prime is 20916942803. The reversal of 20916942801 is 10824961902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20916942801 - 2³ = 20916942793 is a prime.

It is a super-2 number, since 2×20916942801² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20916942803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624156 + ... + 656813.

It is an arithmetic number, because the mean of its divisors is an integer number (3486800340).

Almost surely, 2^20916942801 is an apocalyptic number.

It is an amenable number.

20916942801 is a deficient number, since it is larger than the sum of its proper divisors (6977459919).

20916942801 is a wasteful number, since it uses less digits than its factorization.

20916942801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286415.

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 20916942801 in words is "twenty billion, nine hundred sixteen million, nine hundred forty-two thousand, eight hundred one".