812080457979 has 48 divisors (see below), whose sum is σ = 1271545466400. Its totient is φ = 459630775296.

The previous prime is 812080457971. The next prime is 812080458103. The reversal of 812080457979 is 979754080218.

It is not a de Polignac number, because 812080457979 - 2³ = 812080457971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (812080457971) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59230177 + ... + 59243885.

It is an arithmetic number, because the mean of its divisors is an integer number (26490530550).

Almost surely, 2^812080457979 is an apocalyptic number.

812080457979 is a deficient number, since it is larger than the sum of its proper divisors (459465008421).

812080457979 is a wasteful number, since it uses less digits than its factorization.

812080457979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17532 (or 17525 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 60.

The spelling of 812080457979 in words is "eight hundred twelve billion, eighty million, four hundred fifty-seven thousand, nine hundred seventy-nine".