78791494093 has 8 divisors (see below), whose sum is σ = 84897040536. Its totient is φ = 72692328000.

The previous prime is 78791494087. The next prime is 78791494099. The reversal of 78791494093 is 39049419787.

It is an interprime number because it is at equal distance from previous prime (78791494087) and next prime (78791494099).

It can be written as a sum of positive squares in 4 ways, for example, as 4272321769 + 74519172324 = 65363^2 + 272982^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 78791494093 - 2²¹ = 78789396941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78791494099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1569418 + ... + 1618843.

It is an arithmetic number, because the mean of its divisors is an integer number (10612130067).

Almost surely, 2^78791494093 is an apocalyptic number.

It is an amenable number.

78791494093 is a deficient number, since it is larger than the sum of its proper divisors (6105546443).

78791494093 is a wasteful number, since it uses less digits than its factorization.

78791494093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190175.

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 78791494093 in words is "seventy-eight billion, seven hundred ninety-one million, four hundred ninety-four thousand, ninety-three".