20124437827 has 16 divisors (see below), whose sum is σ = 22271290272. Its totient is φ = 18065998080.

The previous prime is 20124437821. The next prime is 20124437843. The reversal of 20124437827 is 72873442102.

It is not a de Polignac number, because 20124437827 - 2³ = 20124437819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20124437827.

It is not an unprimeable number, because it can be changed into a prime (20124437821) 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, 109408 + ... + 228514.

It is an arithmetic number, because the mean of its divisors is an integer number (1391955642).

Almost surely, 2^20124437827 is an apocalyptic number.

20124437827 is a deficient number, since it is larger than the sum of its proper divisors (2146852445).

20124437827 is a wasteful number, since it uses less digits than its factorization.

20124437827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119478.

The product of its (nonzero) digits is 150528, while the sum is 40.

Adding to 20124437827 its reverse (72873442102), we get a palindrome (92997879929).

The spelling of 20124437827 in words is "twenty billion, one hundred twenty-four million, four hundred thirty-seven thousand, eight hundred twenty-seven".