61474389822143 has 2 divisors, whose sum is σ = 61474389822144. Its totient is φ = 61474389822142.

The previous prime is 61474389822119. The next prime is 61474389822149. The reversal of 61474389822143 is 34122898347416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61474389822143 - 2¹² = 61474389818047 is a prime.

It is a super-2 number, since 2×61474389822143² (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 (61474389822149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30737194911071 + 30737194911072.

It is an arithmetic number, because the mean of its divisors is an integer number (30737194911072).

Almost surely, 2^{61474389822143} is an apocalyptic number.

61474389822143 is a deficient number, since it is larger than the sum of its proper divisors (1).

61474389822143 is an equidigital number, since it uses as much as digits as its factorization.

61474389822143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55738368, while the sum is 62.

The spelling of 61474389822143 in words is "sixty-one trillion, four hundred seventy-four billion, three hundred eighty-nine million, eight hundred twenty-two thousand, one hundred forty-three".