2178041071963 has 2 divisors, whose sum is σ = 2178041071964. Its totient is φ = 2178041071962.

The previous prime is 2178041071939. The next prime is 2178041071981. The reversal of 2178041071963 is 3691701408712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2178041071963 - 2⁵ = 2178041071931 is a prime.

It is a super-2 number, since 2×2178041071963² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2178041071363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1089020535981 + 1089020535982.

It is an arithmetic number, because the mean of its divisors is an integer number (1089020535982).

Almost surely, 2^{2178041071963} is an apocalyptic number.

2178041071963 is a deficient number, since it is larger than the sum of its proper divisors (1).

2178041071963 is an equidigital number, since it uses as much as digits as its factorization.

2178041071963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 2178041071963 in words is "two trillion, one hundred seventy-eight billion, forty-one million, seventy-one thousand, nine hundred sixty-three".