78993514473 has 4 divisors (see below), whose sum is σ = 105324685968. Its totient is φ = 52662342980.

The previous prime is 78993514469. The next prime is 78993514477. The reversal of 78993514473 is 37441539987.

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.

It is an interprime number because it is at equal distance from previous prime (78993514469) and next prime (78993514477).

It is a cyclic number.

It is not a de Polignac number, because 78993514473 - 2² = 78993514469 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78993514477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13165585743 + ... + 13165585748.

It is an arithmetic number, because the mean of its divisors is an integer number (26331171492).

Almost surely, 2^78993514473 is an apocalyptic number.

It is an amenable number.

78993514473 is a deficient number, since it is larger than the sum of its proper divisors (26331171495).

78993514473 is a wasteful number, since it uses less digits than its factorization.

78993514473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26331171494.

The product of its digits is 22861440, while the sum is 60.

It can be divided in two parts, 789935 and 14473, that added together give a palindrome (804408).

The spelling of 78993514473 in words is "seventy-eight billion, nine hundred ninety-three million, five hundred fourteen thousand, four hundred seventy-three".