78299509413 has 4 divisors (see below), whose sum is σ = 104399345888. Its totient is φ = 52199672940.

The previous prime is 78299509373. The next prime is 78299509429. The reversal of 78299509413 is 31490599287.

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 not a de Polignac number, because 78299509413 - 2⁹ = 78299508901 is a prime.

It is a super-2 number, since 2×78299509413² (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 (78299509493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13049918233 + ... + 13049918238.

It is an arithmetic number, because the mean of its divisors is an integer number (26099836472).

Almost surely, 2^78299509413 is an apocalyptic number.

It is an amenable number.

78299509413 is a deficient number, since it is larger than the sum of its proper divisors (26099836475).

78299509413 is a wasteful number, since it uses less digits than its factorization.

78299509413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26099836474.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The spelling of 78299509413 in words is "seventy-eight billion, two hundred ninety-nine million, five hundred nine thousand, four hundred thirteen".