80669051770 has 16 divisors (see below), whose sum is σ = 145212718248. Its totient is φ = 32265748480.

The previous prime is 80669051761. The next prime is 80669051779. The reversal of 80669051770 is 7715096608.

It is an interprime number because it is at equal distance from previous prime (80669051761) and next prime (80669051779).

It can be written as a sum of positive squares in 4 ways, for example, as 17919302769 + 62749749001 = 133863^2 + 250499^2 .

It is not an unprimeable number, because it can be changed into a prime (80669051779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45859 + ... + 404278.

Almost surely, 2^80669051770 is an apocalyptic number.

80669051770 is a deficient number, since it is larger than the sum of its proper divisors (64543666478).

80669051770 is a wasteful number, since it uses less digits than its factorization.

80669051770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468065.

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 80669051770 in words is "eighty billion, six hundred sixty-nine million, fifty-one thousand, seven hundred seventy".