79262643343849 has 15 divisors (see below), whose sum is σ = 92468090768343. Its totient is φ = 67939034656248.

The previous prime is 79262643343843. The next prime is 79262643343879. The reversal of 79262643343849 is 94834334626297.

The square root of 79262643343849 is 8902957.

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

It can be written as a sum of positive squares in only one way, i.e., 26006685105625 + 53255958238224 = 5099675^2 + 7297668^2 .

It is not a de Polignac number, because 79262643343849 - 2²⁷ = 79262509126121 is a prime.

It is a super-2 number, since 2×79262643343849² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79262643343843) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 436154047 + ... + 436335739.

Almost surely, 2^{79262643343849} is an apocalyptic number.

79262643343849 is the 8902957-th square number.

79262643343849 is the 4451479-th centered octagonal number.

It is an amenable number.

79262643343849 is a deficient number, since it is larger than the sum of its proper divisors (13205447424494).

79262643343849 is an frugal number, since it uses more digits than its factorization.

79262643343849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363414 (or 181700 counting only the distinct ones).

The product of its digits is 1128701952, while the sum is 70.

The spelling of 79262643343849 in words is "seventy-nine trillion, two hundred sixty-two billion, six hundred forty-three million, three hundred forty-three thousand, eight hundred forty-nine".