61756622141 has 2 divisors, whose sum is σ = 61756622142. Its totient is φ = 61756622140.

The previous prime is 61756622113. The next prime is 61756622197. The reversal of 61756622141 is 14122665716.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35047584100 + 26709038041 = 187210^2 + 163429^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61756622141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61756622111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30878311070 + 30878311071.

It is an arithmetic number, because the mean of its divisors is an integer number (30878311071).

Almost surely, 2^61756622141 is an apocalyptic number.

It is an amenable number.

61756622141 is a deficient number, since it is larger than the sum of its proper divisors (1).

61756622141 is an equidigital number, since it uses as much as digits as its factorization.

61756622141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The spelling of 61756622141 in words is "sixty-one billion, seven hundred fifty-six million, six hundred twenty-two thousand, one hundred forty-one".