61077639163 has 2 divisors, whose sum is σ = 61077639164. Its totient is φ = 61077639162.

The previous prime is 61077639143. The next prime is 61077639179. The reversal of 61077639163 is 36193677016.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61077639163 - 2²⁹ = 60540768251 is a prime.

It is not a weakly prime, because it can be changed into another prime (61077639143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30538819581 + 30538819582.

It is an arithmetic number, because the mean of its divisors is an integer number (30538819582).

Almost surely, 2^61077639163 is an apocalyptic number.

61077639163 is a deficient number, since it is larger than the sum of its proper divisors (1).

61077639163 is an equidigital number, since it uses as much as digits as its factorization.

61077639163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 857304, while the sum is 49.

The spelling of 61077639163 in words is "sixty-one billion, seventy-seven million, six hundred thirty-nine thousand, one hundred sixty-three".