78389001793099 has 4 divisors (see below), whose sum is σ = 78740521980736. Its totient is φ = 78037481605464.

The previous prime is 78389001793033. The next prime is 78389001793127. The reversal of 78389001793099 is 99039710098387.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78389001793099 - 2²⁷ = 78388867575371 is a prime.

It is a super-2 number, since 2×78389001793099² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78389001773099) 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, 175760093484 + ... + 175760093929.

It is an arithmetic number, because the mean of its divisors is an integer number (19685130495184).

Almost surely, 2^{78389001793099} is an apocalyptic number.

78389001793099 is a deficient number, since it is larger than the sum of its proper divisors (351520187637).

78389001793099 is a wasteful number, since it uses less digits than its factorization.

78389001793099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351520187636.

The product of its (nonzero) digits is 185177664, while the sum is 73.

The spelling of 78389001793099 in words is "seventy-eight trillion, three hundred eighty-nine billion, one million, seven hundred ninety-three thousand, ninety-nine".