815877226741 has 2 divisors, whose sum is σ = 815877226742. Its totient is φ = 815877226740.

The previous prime is 815877226733. The next prime is 815877226751. The reversal of 815877226741 is 147622778518.

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., 425090960100 + 390786266641 = 651990^2 + 625129^2 .

It is a cyclic number.

It is not a de Polignac number, because 815877226741 - 2³ = 815877226733 is a prime.

It is a super-2 number, since 2×815877226741² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (815877226751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407938613370 + 407938613371.

It is an arithmetic number, because the mean of its divisors is an integer number (407938613371).

Almost surely, 2^815877226741 is an apocalyptic number.

It is an amenable number.

815877226741 is a deficient number, since it is larger than the sum of its proper divisors (1).

815877226741 is an equidigital number, since it uses as much as digits as its factorization.

815877226741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10536960, while the sum is 58.

The spelling of 815877226741 in words is "eight hundred fifteen billion, eight hundred seventy-seven million, two hundred twenty-six thousand, seven hundred forty-one".