20354621359 has 32 divisors (see below), whose sum is σ = 22395985920. Its totient is φ = 18427500000.

The previous prime is 20354621333. The next prime is 20354621369. The reversal of 20354621359 is 95312645302.

It is a cyclic number.

It is not a de Polignac number, because 20354621359 - 2²⁷ = 20220403631 is a prime.

It is a super-2 number, since 2×20354621359² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20354621369) 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, 19366384 + ... + 19367434.

It is an arithmetic number, because the mean of its divisors is an integer number (699874560).

Almost surely, 2^20354621359 is an apocalyptic number.

20354621359 is a deficient number, since it is larger than the sum of its proper divisors (2041364561).

20354621359 is a wasteful number, since it uses less digits than its factorization.

20354621359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 20354621359 in words is "twenty billion, three hundred fifty-four million, six hundred twenty-one thousand, three hundred fifty-nine".