2215808863057 has 2 divisors, whose sum is σ = 2215808863058. Its totient is φ = 2215808863056.

The previous prime is 2215808863019. The next prime is 2215808863063. The reversal of 2215808863057 is 7503688085122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2158810165521 + 56998697536 = 1469289^2 + 238744^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215808863057 - 2³¹ = 2213661379409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2215808862989 and 2215808863007.

It is not a weakly prime, because it can be changed into another prime (2215808863757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107904431528 + 1107904431529.

It is an arithmetic number, because the mean of its divisors is an integer number (1107904431529).

Almost surely, 2^{2215808863057} is an apocalyptic number.

It is an amenable number.

2215808863057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215808863057 is an equidigital number, since it uses as much as digits as its factorization.

2215808863057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6451200, while the sum is 55.

The spelling of 2215808863057 in words is "two trillion, two hundred fifteen billion, eight hundred eight million, eight hundred sixty-three thousand, fifty-seven".