43773809523061 has 2 divisors, whose sum is σ = 43773809523062. Its totient is φ = 43773809523060.

The previous prime is 43773809523011. The next prime is 43773809523151. The reversal of 43773809523061 is 16032590837734.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43421114880900 + 352694642161 = 6589470^2 + 593881^2 .

It is a cyclic number.

It is not a de Polignac number, because 43773809523061 - 2⁹ = 43773809522549 is a prime.

It is a super-2 number, since 2×43773809523061² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43773809522987 and 43773809523005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43773809523011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21886904761530 + 21886904761531.

It is an arithmetic number, because the mean of its divisors is an integer number (21886904761531).

It is a 1-persistent number, because it is pandigital, but 2⋅43773809523061 = 87547619046122 is not.

Almost surely, 2^{43773809523061} is an apocalyptic number.

It is an amenable number.

43773809523061 is a deficient number, since it is larger than the sum of its proper divisors (1).

43773809523061 is an equidigital number, since it uses as much as digits as its factorization.

43773809523061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22861440, while the sum is 58.

The spelling of 43773809523061 in words is "forty-three trillion, seven hundred seventy-three billion, eight hundred nine million, five hundred twenty-three thousand, sixty-one".