40004305636 has 6 divisors (see below), whose sum is σ = 70007534870. Its totient is φ = 20002152816.

The previous prime is 40004305619. The next prime is 40004305643. The reversal of 40004305636 is 63650340004.

It can be written as a sum of positive squares in only one way, i.e., 39984001600 + 20304036 = 199960^2 + 4506^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40004305598 and 40004305607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000538201 + ... + 5000538208.

Almost surely, 2^40004305636 is an apocalyptic number.

It is an amenable number.

40004305636 is a deficient number, since it is larger than the sum of its proper divisors (30003229234).

40004305636 is a wasteful number, since it uses less digits than its factorization.

40004305636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10001076413 (or 10001076411 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

The spelling of 40004305636 in words is "forty billion, four million, three hundred five thousand, six hundred thirty-six".