78094094977 has 2 divisors, whose sum is σ = 78094094978. Its totient is φ = 78094094976.

The previous prime is 78094094963. The next prime is 78094095019. The reversal of 78094094977 is 77949049087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73310436081 + 4783658896 = 270759^2 + 69164^2 .

It is a cyclic number.

It is not a de Polignac number, because 78094094977 - 2⁷ = 78094094849 is a prime.

It is not a weakly prime, because it can be changed into another prime (78094094927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39047047488 + 39047047489.

It is an arithmetic number, because the mean of its divisors is an integer number (39047047489).

Almost surely, 2^78094094977 is an apocalyptic number.

It is an amenable number.

78094094977 is a deficient number, since it is larger than the sum of its proper divisors (1).

78094094977 is an equidigital number, since it uses as much as digits as its factorization.

78094094977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32006016, while the sum is 64.

The spelling of 78094094977 in words is "seventy-eight billion, ninety-four million, ninety-four thousand, nine hundred seventy-seven".