78501741367601 has 2 divisors, whose sum is σ = 78501741367602. Its totient is φ = 78501741367600.

The previous prime is 78501741367501. The next prime is 78501741367619. The reversal of 78501741367601 is 10676314710587.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71443048855201 + 7058692512400 = 8452399^2 + 2656820^2 .

It is a cyclic number.

It is not a de Polignac number, because 78501741367601 - 2¹⁴ = 78501741351217 is a prime.

It is not a weakly prime, because it can be changed into another prime (78501741367501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39250870683800 + 39250870683801.

It is an arithmetic number, because the mean of its divisors is an integer number (39250870683801).

Almost surely, 2^{78501741367601} is an apocalyptic number.

It is an amenable number.

78501741367601 is a deficient number, since it is larger than the sum of its proper divisors (1).

78501741367601 is an equidigital number, since it uses as much as digits as its factorization.

78501741367601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5927040, while the sum is 56.

The spelling of 78501741367601 in words is "seventy-eight trillion, five hundred one billion, seven hundred forty-one million, three hundred sixty-seven thousand, six hundred one".