78247241268701 has 2 divisors, whose sum is σ = 78247241268702. Its totient is φ = 78247241268700.

The previous prime is 78247241268649. The next prime is 78247241268709. The reversal of 78247241268701 is 10786214274287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77946826562500 + 300414706201 = 8828750^2 + 548101^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78247241268701 is a prime.

It is a super-2 number, since 2×78247241268701² (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 (78247241268709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39123620634350 + 39123620634351.

It is an arithmetic number, because the mean of its divisors is an integer number (39123620634351).

Almost surely, 2^{78247241268701} is an apocalyptic number.

It is an amenable number.

78247241268701 is a deficient number, since it is larger than the sum of its proper divisors (1).

78247241268701 is an equidigital number, since it uses as much as digits as its factorization.

78247241268701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16859136, while the sum is 59.

The spelling of 78247241268701 in words is "seventy-eight trillion, two hundred forty-seven billion, two hundred forty-one million, two hundred sixty-eight thousand, seven hundred one".