79669014049 has 9 divisors (see below), whose sum is σ = 82519431033. Its totient is φ = 76913903472.

The previous prime is 79669014043. The next prime is 79669014059. The reversal of 79669014049 is 94041096697.

It is a happy number.

The square root of 79669014049 is 282257.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 14627693025 + 65041321024 = 120945^2 + 255032^2 .

It is not a de Polignac number, because 79669014049 - 2¹⁵ = 79668981281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79669014043) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8180587 + ... + 8190319.

Almost surely, 2^79669014049 is an apocalyptic number.

79669014049 is the 282257-th square number.

79669014049 is the 141129-th centered octagonal number.

It is an amenable number.

79669014049 is a deficient number, since it is larger than the sum of its proper divisors (2850416984).

79669014049 is an frugal number, since it uses more digits than its factorization.

79669014049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19524 (or 9762 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 79669014049 in words is "seventy-nine billion, six hundred sixty-nine million, fourteen thousand, forty-nine".