7081612786 has 16 divisors (see below), whose sum is σ = 11259424440. Its totient is φ = 3328921600.

The previous prime is 7081612729. The next prime is 7081612801. The reversal of 7081612786 is 6872161807.

It can be written as a sum of positive squares in 4 ways, for example, as 2616834025 + 4464778761 = 51155^2 + 66819^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80515 + ... + 143686.

Almost surely, 2^7081612786 is an apocalyptic number.

7081612786 is a deficient number, since it is larger than the sum of its proper divisors (4177811654).

7081612786 is a wasteful number, since it uses less digits than its factorization.

7081612786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225149.

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 7081612786 is about 84152.3189579467. The cubic root of 7081612786 is about 1920.3367452251.

The spelling of 7081612786 in words is "seven billion, eighty-one million, six hundred twelve thousand, seven hundred eighty-six".