78826054123 has 2 divisors, whose sum is σ = 78826054124. Its totient is φ = 78826054122.

The previous prime is 78826054103. The next prime is 78826054127. The reversal of 78826054123 is 32145062887.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78826054123 - 2¹³ = 78826045931 is a prime.

It is not a weakly prime, because it can be changed into another prime (78826054127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39413027061 + 39413027062.

It is an arithmetic number, because the mean of its divisors is an integer number (39413027062).

Almost surely, 2^78826054123 is an apocalyptic number.

78826054123 is a deficient number, since it is larger than the sum of its proper divisors (1).

78826054123 is an equidigital number, since it uses as much as digits as its factorization.

78826054123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 78826054123 in words is "seventy-eight billion, eight hundred twenty-six million, fifty-four thousand, one hundred twenty-three".