7040661788 has 24 divisors (see below), whose sum is σ = 12371330160. Its totient is φ = 3506025600.

The previous prime is 7040661787. The next prime is 7040661811. The reversal of 7040661788 is 8871660407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7040661787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114238 + ... + 1120538.

It is an arithmetic number, because the mean of its divisors is an integer number (515472090).

Almost surely, 2^7040661788 is an apocalyptic number.

It is an amenable number.

7040661788 is a deficient number, since it is larger than the sum of its proper divisors (5330668372).

7040661788 is a wasteful number, since it uses less digits than its factorization.

7040661788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7397 (or 7395 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 7040661788 is about 83908.6514490610. The cubic root of 7040661788 is about 1916.6279959465.

The spelling of 7040661788 in words is "seven billion, forty million, six hundred sixty-one thousand, seven hundred eighty-eight".