78318592494 has 8 divisors (see below), whose sum is σ = 156637185000. Its totient is φ = 26106197496.

The previous prime is 78318592487. The next prime is 78318592501. The reversal of 78318592494 is 49429581387.

It is an interprime number because it is at equal distance from previous prime (78318592487) and next prime (78318592501).

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

78318592494 is an admirable number.

It is a super-2 number, since 2×78318592494² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 6526549369 + ... + 6526549380.

It is an arithmetic number, because the mean of its divisors is an integer number (19579648125).

Almost surely, 2^78318592494 is an apocalyptic number.

78318592494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78318592494 is a wasteful number, since it uses less digits than its factorization.

78318592494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13053098754.

The product of its digits is 17418240, while the sum is 60.

The spelling of 78318592494 in words is "seventy-eight billion, three hundred eighteen million, five hundred ninety-two thousand, four hundred ninety-four".