61474389822149 has 2 divisors, whose sum is σ = 61474389822150. Its totient is φ = 61474389822148.

The previous prime is 61474389822143. The next prime is 61474389822169. The reversal of 61474389822149 is 94122898347416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61067113557025 + 407276265124 = 7814545^2 + 638182^2 .

It is a cyclic number.

It is not a de Polignac number, because 61474389822149 - 2⁸ = 61474389821893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61474389822143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30737194911074 + 30737194911075.

It is an arithmetic number, because the mean of its divisors is an integer number (30737194911075).

Almost surely, 2^{61474389822149} is an apocalyptic number.

It is an amenable number.

61474389822149 is a deficient number, since it is larger than the sum of its proper divisors (1).

61474389822149 is an equidigital number, since it uses as much as digits as its factorization.

61474389822149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 167215104, while the sum is 68.

The spelling of 61474389822149 in words is "sixty-one trillion, four hundred seventy-four billion, three hundred eighty-nine million, eight hundred twenty-two thousand, one hundred forty-nine".