61101756143 has 2 divisors, whose sum is σ = 61101756144. Its totient is φ = 61101756142.

The previous prime is 61101756127. The next prime is 61101756169. The reversal of 61101756143 is 34165710116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61101756143 - 2⁴ = 61101756127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61101756173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30550878071 + 30550878072.

It is an arithmetic number, because the mean of its divisors is an integer number (30550878072).

Almost surely, 2^61101756143 is an apocalyptic number.

61101756143 is a deficient number, since it is larger than the sum of its proper divisors (1).

61101756143 is an equidigital number, since it uses as much as digits as its factorization.

61101756143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 61101756143 in words is "sixty-one billion, one hundred one million, seven hundred fifty-six thousand, one hundred forty-three".