20400200412 has 48 divisors (see below), whose sum is σ = 47895988224. Its totient is φ = 6757920000.

The previous prime is 20400200407. The next prime is 20400200417. The reversal of 20400200412 is 21400200402.

It is an interprime number because it is at equal distance from previous prime (20400200407) and next prime (20400200417).

It is a junction number, because it is equal to n+sod(n) for n = 20400200391 and 20400200400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20400200417) 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, 2748987 + ... + 2756397.

It is an arithmetic number, because the mean of its divisors is an integer number (997833088).

Almost surely, 2^20400200412 is an apocalyptic number.

It is an amenable number.

20400200412 is an abundant number, since it is smaller than the sum of its proper divisors (27495787812).

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

20400200412 is a wasteful number, since it uses less digits than its factorization.

20400200412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8810 (or 8808 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20400200412 its reverse (21400200402), we get a palindrome (41800400814).

The spelling of 20400200412 in words is "twenty billion, four hundred million, two hundred thousand, four hundred twelve".