40940439633 has 16 divisors (see below), whose sum is σ = 62609036800. Its totient is φ = 26413186320.

The previous prime is 40940439629. The next prime is 40940439679. The reversal of 40940439633 is 33693404904.

40940439633 is a `hidden beast` number, since 4 + 0 + 9 + 4 + 0 + 4 + 3 + 9 + 633 = 666.

It is not a de Polignac number, because 40940439633 - 2² = 40940439629 is a prime.

It is a super-2 number, since 2×40940439633² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40940439623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24455818 + ... + 24457491.

It is an arithmetic number, because the mean of its divisors is an integer number (3913064800).

Almost surely, 2^40940439633 is an apocalyptic number.

It is an amenable number.

40940439633 is a deficient number, since it is larger than the sum of its proper divisors (21668597167).

40940439633 is a wasteful number, since it uses less digits than its factorization.

40940439633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48913349 (or 48913343 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 45.

The spelling of 40940439633 in words is "forty billion, nine hundred forty million, four hundred thirty-nine thousand, six hundred thirty-three".