20357282881 has 16 divisors (see below), whose sum is σ = 22670311104. Its totient is φ = 18161567424.

The previous prime is 20357282873. The next prime is 20357282921. The reversal of 20357282881 is 18828275302.

It is not a de Polignac number, because 20357282881 - 2³ = 20357282873 is a prime.

It is a super-2 number, since 2×20357282881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20357282831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174331 + ... + 266656.

It is an arithmetic number, because the mean of its divisors is an integer number (1416894444).

Almost surely, 2^20357282881 is an apocalyptic number.

It is an amenable number.

20357282881 is a deficient number, since it is larger than the sum of its proper divisors (2313028223).

20357282881 is a wasteful number, since it uses less digits than its factorization.

20357282881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441120.

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 20357282881 in words is "twenty billion, three hundred fifty-seven million, two hundred eighty-two thousand, eight hundred eighty-one".