40004037000 has 160 divisors (see below), whose sum is σ = 139836616920. Its totient is φ = 10667721600.

The previous prime is 40004036983. The next prime is 40004037013. The reversal of 40004037000 is 73040004.

It can be written as a sum of positive squares in 4 ways, for example, as 15744728484 + 24259308516 = 125478^2 + 155754^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 165939 + ... + 327938.

Almost surely, 2^40004037000 is an apocalyptic number.

40004037000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40004037000 is an abundant number, since it is smaller than the sum of its proper divisors (99832579920).

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

40004037000 is a wasteful number, since it uses less digits than its factorization.

40004037000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493910 (or 493887 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

Adding to 40004037000 its reverse (73040004), we get a palindrome (40077077004).

The spelling of 40004037000 in words is "forty billion, four million, thirty-seven thousand".