400100000004 has 72 divisors (see below), whose sum is σ = 1013122656000. Its totient is φ = 133134940224.

The previous prime is 400099999969. The next prime is 400100000051. The reversal of 400100000004 is 400000001004.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86244717 + ... + 86249355.

It is an arithmetic number, because the mean of its divisors is an integer number (14071148000).

Almost surely, 2^400100000004 is an apocalyptic number.

It is an amenable number.

400100000004 is an abundant number, since it is smaller than the sum of its proper divisors (613022655996).

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

400100000004 is a wasteful number, since it uses less digits than its factorization.

400100000004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8297 (or 8292 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 400100000004 its reverse (400000001004), we get a palindrome (800100001008).

The spelling of 400100000004 in words is "four hundred billion, one hundred million, four", and thus it is an aban number.