61443021063031 has 2 divisors, whose sum is σ = 61443021063032. Its totient is φ = 61443021063030.

The previous prime is 61443021063019. The next prime is 61443021063043. The reversal of 61443021063031 is 13036012034416.

It is a balanced prime because it is at equal distance from previous prime (61443021063019) and next prime (61443021063043).

It is a cyclic number.

It is not a de Polignac number, because 61443021063031 - 2¹¹ = 61443021060983 is a prime.

It is a super-2 number, since 2×61443021063031² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61443021063001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30721510531515 + 30721510531516.

It is an arithmetic number, because the mean of its divisors is an integer number (30721510531516).

Almost surely, 2^{61443021063031} is an apocalyptic number.

61443021063031 is a deficient number, since it is larger than the sum of its proper divisors (1).

61443021063031 is an equidigital number, since it uses as much as digits as its factorization.

61443021063031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

Adding to 61443021063031 its reverse (13036012034416), we get a palindrome (74479033097447).

The spelling of 61443021063031 in words is "sixty-one trillion, four hundred forty-three billion, twenty-one million, sixty-three thousand, thirty-one".