61446589469 has 2 divisors, whose sum is σ = 61446589470. Its totient is φ = 61446589468.

The previous prime is 61446589453. The next prime is 61446589487. The reversal of 61446589469 is 96498564416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41906184100 + 19540405369 = 204710^2 + 139787^2 .

It is a cyclic number.

It is not a de Polignac number, because 61446589469 - 2⁴ = 61446589453 is a prime.

It is a super-2 number, since 2×61446589469² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61446589439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30723294734 + 30723294735.

It is an arithmetic number, because the mean of its divisors is an integer number (30723294735).

Almost surely, 2^61446589469 is an apocalyptic number.

It is an amenable number.

61446589469 is a deficient number, since it is larger than the sum of its proper divisors (1).

61446589469 is an equidigital number, since it uses as much as digits as its factorization.

61446589469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44789760, while the sum is 62.

The spelling of 61446589469 in words is "sixty-one billion, four hundred forty-six million, five hundred eighty-nine thousand, four hundred sixty-nine".