20055400004 has 12 divisors (see below), whose sum is σ = 37161476604. Its totient is φ = 9437835264.

The previous prime is 20055400003. The next prime is 20055400007. The reversal of 20055400004 is 40000455002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11642841604 + 8412558400 = 107902^2 + 91720^2 .

It is not an unprimeable number, because it can be changed into a prime (20055400003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147466109 + ... + 147466244.

It is an arithmetic number, because the mean of its divisors is an integer number (3096789717).

Almost surely, 2^20055400004 is an apocalyptic number.

It is an amenable number.

20055400004 is a deficient number, since it is larger than the sum of its proper divisors (17106076600).

20055400004 is a wasteful number, since it uses less digits than its factorization.

20055400004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294932374 (or 294932372 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

Adding to 20055400004 its reverse (40000455002), we get a palindrome (60055855006).

The spelling of 20055400004 in words is "twenty billion, fifty-five million, four hundred thousand, four".