61367089969 has 2 divisors, whose sum is σ = 61367089970. Its totient is φ = 61367089968.

The previous prime is 61367089951. The next prime is 61367089997. The reversal of 61367089969 is 96998076316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39090034944 + 22277055025 = 197712^2 + 149255^2 .

It is a cyclic number.

It is not a de Polignac number, because 61367089969 - 2¹⁹ = 61366565681 is a prime.

It is a super-2 number, since 2×61367089969² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61367089969.

It is not a weakly prime, because it can be changed into another prime (61367089909) 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, 30683544984 + 30683544985.

It is an arithmetic number, because the mean of its divisors is an integer number (30683544985).

Almost surely, 2^61367089969 is an apocalyptic number.

It is an amenable number.

61367089969 is a deficient number, since it is larger than the sum of its proper divisors (1).

61367089969 is an equidigital number, since it uses as much as digits as its factorization.

61367089969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26453952, while the sum is 64.

The spelling of 61367089969 in words is "sixty-one billion, three hundred sixty-seven million, eighty-nine thousand, nine hundred sixty-nine".