2215637893489 has 2 divisors, whose sum is σ = 2215637893490. Its totient is φ = 2215637893488.

The previous prime is 2215637893487. The next prime is 2215637893493. The reversal of 2215637893489 is 9843987365122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1381506390625 + 834131502864 = 1175375^2 + 913308^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215637893489 - 2¹ = 2215637893487 is a prime.

Together with 2215637893487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2215637893487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107818946744 + 1107818946745.

It is an arithmetic number, because the mean of its divisors is an integer number (1107818946745).

Almost surely, 2^{2215637893489} is an apocalyptic number.

It is an amenable number.

2215637893489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215637893489 is an equidigital number, since it uses as much as digits as its factorization.

2215637893489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 156764160, while the sum is 67.

The spelling of 2215637893489 in words is "two trillion, two hundred fifteen billion, six hundred thirty-seven million, eight hundred ninety-three thousand, four hundred eighty-nine".