78148678748823 has 12 divisors (see below), whose sum is σ = 112882159473408. Its totient is φ = 52098780113280.

The previous prime is 78148678748783. The next prime is 78148678748863. The reversal of 78148678748823 is 32884787684187.

78148678748823 is a `hidden beast` number, since 7 + 8 + 1 + 48 + 6 + 78 + 7 + 488 + 23 = 666.

It is an interprime number because it is at equal distance from previous prime (78148678748783) and next prime (78148678748863).

It is not a de Polignac number, because 78148678748823 - 2³⁴ = 78131498879639 is a prime.

It is a super-2 number, since 2×78148678748823² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78148678748863) 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, 26790615 + ... + 29564072.

It is an arithmetic number, because the mean of its divisors is an integer number (9406846622784).

Almost surely, 2^{78148678748823} is an apocalyptic number.

78148678748823 is a deficient number, since it is larger than the sum of its proper divisors (34733480724585).

78148678748823 is a wasteful number, since it uses less digits than its factorization.

78148678748823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56508774 (or 56508771 counting only the distinct ones).

The product of its digits is 6473908224, while the sum is 81.

The spelling of 78148678748823 in words is "seventy-eight trillion, one hundred forty-eight billion, six hundred seventy-eight million, seven hundred forty-eight thousand, eight hundred twenty-three".