78973996471 has 2 divisors, whose sum is σ = 78973996472. Its totient is φ = 78973996470.

The previous prime is 78973996447. The next prime is 78973996477. The reversal of 78973996471 is 17469937987.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78973996471 - 2⁹ = 78973995959 is a prime.

It is a super-3 number, since 3×78973996471³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78973996471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78973996477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39486998235 + 39486998236.

It is an arithmetic number, because the mean of its divisors is an integer number (39486998236).

Almost surely, 2^78973996471 is an apocalyptic number.

78973996471 is a deficient number, since it is larger than the sum of its proper divisors (1).

78973996471 is an equidigital number, since it uses as much as digits as its factorization.

78973996471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144027072, while the sum is 70.

The spelling of 78973996471 in words is "seventy-eight billion, nine hundred seventy-three million, nine hundred ninety-six thousand, four hundred seventy-one".