78148678748863 has 2 divisors, whose sum is σ = 78148678748864. Its totient is φ = 78148678748862.

The previous prime is 78148678748783. The next prime is 78148678748929. The reversal of 78148678748863 is 36884787684187.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78148678748863 - 2⁴⁵ = 42964306660031 is a prime.

It is a super-2 number, since 2×78148678748863² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78148678748663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39074339374431 + 39074339374432.

It is an arithmetic number, because the mean of its divisors is an integer number (39074339374432).

Almost surely, 2^{78148678748863} is an apocalyptic number.

78148678748863 is a deficient number, since it is larger than the sum of its proper divisors (1).

78148678748863 is an equidigital number, since it uses as much as digits as its factorization.

78148678748863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19421724672, while the sum is 85.

The spelling of 78148678748863 in words is "seventy-eight trillion, one hundred forty-eight billion, six hundred seventy-eight million, seven hundred forty-eight thousand, eight hundred sixty-three".