61071675991 has 2 divisors, whose sum is σ = 61071675992. Its totient is φ = 61071675990.

The previous prime is 61071675971. The next prime is 61071676031. The reversal of 61071675991 is 19957617016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61071675991 - 2³³ = 52481741399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61071675941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30535837995 + 30535837996.

It is an arithmetic number, because the mean of its divisors is an integer number (30535837996).

Almost surely, 2^61071675991 is an apocalyptic number.

61071675991 is a deficient number, since it is larger than the sum of its proper divisors (1).

61071675991 is an equidigital number, since it uses as much as digits as its factorization.

61071675991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 714420, while the sum is 52.

The spelling of 61071675991 in words is "sixty-one billion, seventy-one million, six hundred seventy-five thousand, nine hundred ninety-one".