78651438093 has 12 divisors (see below), whose sum is σ = 114060256128. Its totient is φ = 52225389000.

The previous prime is 78651438079. The next prime is 78651438097. The reversal of 78651438093 is 39083415687.

78651438093 is a `hidden beast` number, since 7 + 8 + 6 + 514 + 38 + 0 + 93 = 666.

It is not a de Polignac number, because 78651438093 - 2³⁰ = 77577696269 is a prime.

It is a super-2 number, since 2×78651438093² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78651438097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17406205 + ... + 17410722.

It is an arithmetic number, because the mean of its divisors is an integer number (9505021344).

Almost surely, 2^78651438093 is an apocalyptic number.

It is an amenable number.

78651438093 is a deficient number, since it is larger than the sum of its proper divisors (35408818035).

78651438093 is a wasteful number, since it uses less digits than its factorization.

78651438093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34817184 (or 34817181 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 78651438093 in words is "seventy-eight billion, six hundred fifty-one million, four hundred thirty-eight thousand, ninety-three".