7040661771 has 16 divisors (see below), whose sum is σ = 11028729600. Its totient is φ = 3938831520.

The previous prime is 7040661659. The next prime is 7040661773. The reversal of 7040661771 is 1771660407.

It is not a de Polignac number, because 7040661771 - 2⁷ = 7040661643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (7040661773) 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 15 ways as a sum of consecutive naturals, for example, 8205471 + ... + 8206328.

It is an arithmetic number, because the mean of its divisors is an integer number (689295600).

Almost surely, 2^7040661771 is an apocalyptic number.

7040661771 is a deficient number, since it is larger than the sum of its proper divisors (3988067829).

7040661771 is a wasteful number, since it uses less digits than its factorization.

7040661771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16411826.

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 7040661771 is about 83908.6513477603. The cubic root of 7040661771 is about 1916.6279944039.

The spelling of 7040661771 in words is "seven billion, forty million, six hundred sixty-one thousand, seven hundred seventy-one".