78952340671 has 4 divisors (see below), whose sum is σ = 79139876344. Its totient is φ = 78764805000.

The previous prime is 78952340659. The next prime is 78952340717. The reversal of 78952340671 is 17604325987.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17604325987 = 19 ⋅926543473.

It is a 8-Lehmer number, since φ(78952340671) divides (78952340671-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 78952340671 - 2¹⁷ = 78952209599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78952340611) 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, 93767205 + ... + 93768046.

It is an arithmetic number, because the mean of its divisors is an integer number (19784969086).

It is a 2-persistent number, because it is pandigital, and so is 2⋅78952340671 = 157904681342, but 3⋅78952340671 = 236857022013 is not.

Almost surely, 2^78952340671 is an apocalyptic number.

78952340671 is a deficient number, since it is larger than the sum of its proper divisors (187535673).

78952340671 is a wasteful number, since it uses less digits than its factorization.

78952340671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187535672.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 78952340671 in words is "seventy-eight billion, nine hundred fifty-two million, three hundred forty thousand, six hundred seventy-one".