61179191191 has 2 divisors, whose sum is σ = 61179191192. Its totient is φ = 61179191190.

The previous prime is 61179191173. The next prime is 61179191209. The reversal of 61179191191 is 19119197116.

It is a balanced prime because it is at equal distance from previous prime (61179191173) and next prime (61179191209).

It is a cyclic number.

It is not a de Polignac number, because 61179191191 - 2⁷ = 61179191063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61179191131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30589595595 + 30589595596.

It is an arithmetic number, because the mean of its divisors is an integer number (30589595596).

Almost surely, 2^61179191191 is an apocalyptic number.

61179191191 is a deficient number, since it is larger than the sum of its proper divisors (1).

61179191191 is an equidigital number, since it uses as much as digits as its factorization.

61179191191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 46.

The spelling of 61179191191 in words is "sixty-one billion, one hundred seventy-nine million, one hundred ninety-one thousand, one hundred ninety-one".