20016211540 has 48 divisors (see below), whose sum is σ = 45278916480. Its totient is φ = 7388726400.

The previous prime is 20016211531. The next prime is 20016211549. The reversal of 20016211540 is 4511261002.

It is an interprime number because it is at equal distance from previous prime (20016211531) and next prime (20016211549).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20016211549) 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, 1417515 + ... + 1431565.

It is an arithmetic number, because the mean of its divisors is an integer number (943310760).

Almost surely, 2^20016211540 is an apocalyptic number.

20016211540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20016211540 is an abundant number, since it is smaller than the sum of its proper divisors (25262704940).

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

20016211540 is a wasteful number, since it uses less digits than its factorization.

20016211540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19552 (or 19550 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 20016211540 its reverse (4511261002), we get a palindrome (24527472542).

The spelling of 20016211540 in words is "twenty billion, sixteen million, two hundred eleven thousand, five hundred forty".