20717087382 has 24 divisors (see below), whose sum is σ = 44889676104. Its totient is φ = 6905287584.

The previous prime is 20717087381. The next prime is 20717087401. The reversal of 20717087382 is 28378071702.

It is a happy number.

20717087382 is a `hidden beast` number, since 20 + 7 + 170 + 87 + 382 = 666.

It is a super-2 number, since 2×20717087382² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20717087381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 548973 + ... + 585495.

It is an arithmetic number, because the mean of its divisors is an integer number (1870403171).

Almost surely, 2^20717087382 is an apocalyptic number.

20717087382 is an abundant number, since it is smaller than the sum of its proper divisors (24172588722).

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

20717087382 is a wasteful number, since it uses less digits than its factorization.

20717087382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68044 (or 68041 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The spelling of 20717087382 in words is "twenty billion, seven hundred seventeen million, eighty-seven thousand, three hundred eighty-two".