78050503055761 has 2 divisors, whose sum is σ = 78050503055762. Its totient is φ = 78050503055760.

The previous prime is 78050503055753. The next prime is 78050503055779. The reversal of 78050503055761 is 16755030505087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43940406107536 + 34110096948225 = 6628756^2 + 5840385^2 .

It is a cyclic number.

It is not a de Polignac number, because 78050503055761 - 2³ = 78050503055753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78050503055699 and 78050503055708.

It is not a weakly prime, because it can be changed into another prime (78050503055741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39025251527880 + 39025251527881.

It is an arithmetic number, because the mean of its divisors is an integer number (39025251527881).

Almost surely, 2^{78050503055761} is an apocalyptic number.

It is an amenable number.

78050503055761 is a deficient number, since it is larger than the sum of its proper divisors (1).

78050503055761 is an equidigital number, since it uses as much as digits as its factorization.

78050503055761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410000, while the sum is 52.

The spelling of 78050503055761 in words is "seventy-eight trillion, fifty billion, five hundred three million, fifty-five thousand, seven hundred sixty-one".