20400230152 has 16 divisors (see below), whose sum is σ = 38323856700. Its totient is φ = 10180535040.

The previous prime is 20400230101. The next prime is 20400230173. The reversal of 20400230152 is 25103200402.

It can be written as a sum of positive squares in 2 ways, for example, as 18237422116 + 2162808036 = 135046^2 + 46506^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2443077 + ... + 2451412.

Almost surely, 2^20400230152 is an apocalyptic number.

It is an amenable number.

20400230152 is a deficient number, since it is larger than the sum of its proper divisors (17923626548).

20400230152 is a wasteful number, since it uses less digits than its factorization.

20400230152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4895016 (or 4895012 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 20400230152 its reverse (25103200402), we get a palindrome (45503430554).

The spelling of 20400230152 in words is "twenty billion, four hundred million, two hundred thirty thousand, one hundred fifty-two".