40100400004 has 24 divisors (see below), whose sum is σ = 81299445248. Its totient is φ = 16950461760.

The previous prime is 40100400001. The next prime is 40100400029. The reversal of 40100400004 is 40000400104.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40100400001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9807252 + ... + 9811339.

Almost surely, 2^40100400004 is an apocalyptic number.

It is an amenable number.

40100400004 is an abundant number, since it is smaller than the sum of its proper divisors (41199045244).

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

40100400004 is a wasteful number, since it uses less digits than its factorization.

40100400004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19618675 (or 19618673 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 40100400004 its reverse (40000400104), we get a palindrome (80100800108).

The spelling of 40100400004 in words is "forty billion, one hundred million, four hundred thousand, four".