20551316214 has 64 divisors (see below), whose sum is σ = 48377790720. Its totient is φ = 5737979520.

The previous prime is 20551316213. The next prime is 20551316243. The reversal of 20551316214 is 41261315502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20551316213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 447432 + ... + 491220.

It is an arithmetic number, because the mean of its divisors is an integer number (755902980).

Almost surely, 2^20551316214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20551316214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24188895360).

20551316214 is an abundant number, since it is smaller than the sum of its proper divisors (27826474506).

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

20551316214 is a wasteful number, since it uses less digits than its factorization.

20551316214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44365.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 20551316214 in words is "twenty billion, five hundred fifty-one million, three hundred sixteen thousand, two hundred fourteen".