40405438030 has 16 divisors (see below), whose sum is σ = 73922081184. Its totient is φ = 15897221280.

The previous prime is 40405438009. The next prime is 40405438061. The reversal of 40405438030 is 3083450404.

It is a junction number, because it is equal to n+sod(n) for n = 40405437983 and 40405438001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33118602 + ... + 33119821.

It is an arithmetic number, because the mean of its divisors is an integer number (4620130074).

Almost surely, 2^40405438030 is an apocalyptic number.

40405438030 is a deficient number, since it is larger than the sum of its proper divisors (33516643154).

40405438030 is a wasteful number, since it uses less digits than its factorization.

40405438030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66238491.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 40405438030 its reverse (3083450404), we get a palindrome (43488888434).

The spelling of 40405438030 in words is "forty billion, four hundred five million, four hundred thirty-eight thousand, thirty".