78419939395 has 8 divisors (see below), whose sum is σ = 107547345504. Its totient is φ = 53773672704.

The previous prime is 78419939369. The next prime is 78419939441. The reversal of 78419939395 is 59393991487.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78419939395 is a prime.

It is a super-2 number, since 2×78419939395² (a number of 23 digits) contains 22 as substring.

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 78419939395.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1120284814 + ... + 1120284883.

It is an arithmetic number, because the mean of its divisors is an integer number (13443418188).

Almost surely, 2^78419939395 is an apocalyptic number.

78419939395 is a deficient number, since it is larger than the sum of its proper divisors (29127406109).

78419939395 is a wasteful number, since it uses less digits than its factorization.

78419939395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240569709.

The product of its digits is 66134880, while the sum is 67.

The spelling of 78419939395 in words is "seventy-eight billion, four hundred nineteen million, nine hundred thirty-nine thousand, three hundred ninety-five".