78475623073 has 4 divisors (see below), whose sum is σ = 78494001408. Its totient is φ = 78457244740.

The previous prime is 78475623071. The next prime is 78475623097. The reversal of 78475623073 is 37032657487.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37032657487 = 7 ⋅5290379641.

It is a cyclic number.

It is not a de Polignac number, because 78475623073 - 2¹ = 78475623071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78475623073.

It is not an unprimeable number, because it can be changed into a prime (78475623071) 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, 9182761 + ... + 9191302.

It is an arithmetic number, because the mean of its divisors is an integer number (19623500352).

Almost surely, 2^78475623073 is an apocalyptic number.

It is an amenable number.

78475623073 is a deficient number, since it is larger than the sum of its proper divisors (18378335).

78475623073 is a wasteful number, since it uses less digits than its factorization.

78475623073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18378334.

The product of its (nonzero) digits is 5927040, while the sum is 52.

The spelling of 78475623073 in words is "seventy-eight billion, four hundred seventy-five million, six hundred twenty-three thousand, seventy-three".