802101227678701 has 2 divisors, whose sum is σ = 802101227678702. Its totient is φ = 802101227678700.

The previous prime is 802101227678693. The next prime is 802101227678731. The reversal of 802101227678701 is 107876722101208.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 674978534161801 + 127122693516900 = 25980349^2 + 11274870^2 .

It is a cyclic number.

It is not a de Polignac number, because 802101227678701 - 2³ = 802101227678693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (802101227678731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401050613839350 + 401050613839351.

It is an arithmetic number, because the mean of its divisors is an integer number (401050613839351).

Almost surely, 2^{802101227678701} is an apocalyptic number.

It is an amenable number.

802101227678701 is a deficient number, since it is larger than the sum of its proper divisors (1).

802101227678701 is an equidigital number, since it uses as much as digits as its factorization.

802101227678701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1053696, while the sum is 52.

Adding to 802101227678701 its reverse (107876722101208), we get a palindrome (909977949779909).

The spelling of 802101227678701 in words is "eight hundred two trillion, one hundred one billion, two hundred twenty-seven million, six hundred seventy-eight thousand, seven hundred one".