8726204428957 has 2 divisors, whose sum is σ = 8726204428958. Its totient is φ = 8726204428956.

The previous prime is 8726204428847. The next prime is 8726204428973. The reversal of 8726204428957 is 7598244026278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6098657446116 + 2627546982841 = 2469546^2 + 1620971^2 .

It is a cyclic number.

It is not a de Polignac number, because 8726204428957 - 2⁷ = 8726204428829 is a prime.

It is a super-2 number, since 2×8726204428957² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8726204428457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4363102214478 + 4363102214479.

It is an arithmetic number, because the mean of its divisors is an integer number (4363102214479).

Almost surely, 2^{8726204428957} is an apocalyptic number.

It is an amenable number.

8726204428957 is a deficient number, since it is larger than the sum of its proper divisors (1).

8726204428957 is an equidigital number, since it uses as much as digits as its factorization.

8726204428957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108380160, while the sum is 64.

The spelling of 8726204428957 in words is "eight trillion, seven hundred twenty-six billion, two hundred four million, four hundred twenty-eight thousand, nine hundred fifty-seven".