78275922271 has 4 divisors (see below), whose sum is σ = 78289393752. Its totient is φ = 78262450792.

The previous prime is 78275922269. The next prime is 78275922293. The reversal of 78275922271 is 17222957287.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17222957287 = 124919 ⋅137873.

It is a cyclic number.

It is not a de Polignac number, because 78275922271 - 2¹ = 78275922269 is a prime.

It is a super-2 number, since 2×78275922271² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78275922671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6727021 + ... + 6738646.

It is an arithmetic number, because the mean of its divisors is an integer number (19572348438).

Almost surely, 2^78275922271 is an apocalyptic number.

78275922271 is a deficient number, since it is larger than the sum of its proper divisors (13471481).

78275922271 is a wasteful number, since it uses less digits than its factorization.

78275922271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13471480.

The product of its digits is 1975680, while the sum is 52.

The spelling of 78275922271 in words is "seventy-eight billion, two hundred seventy-five million, nine hundred twenty-two thousand, two hundred seventy-one".