20016354531 has 16 divisors (see below), whose sum is σ = 27343540224. Its totient is φ = 13017484704.

The previous prime is 20016354511. The next prime is 20016354539. The reversal of 20016354531 is 13545361002.

It is not a de Polignac number, because 20016354531 - 2⁶ = 20016354467 is a prime.

It is a super-2 number, since 2×20016354531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20016354539) 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, 5470 + ... + 200156.

It is an arithmetic number, because the mean of its divisors is an integer number (1708971264).

Almost surely, 2^20016354531 is an apocalyptic number.

20016354531 is a deficient number, since it is larger than the sum of its proper divisors (7327185693).

20016354531 is a wasteful number, since it uses less digits than its factorization.

20016354531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195530.

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 20016354531 in words is "twenty billion, sixteen million, three hundred fifty-four thousand, five hundred thirty-one".