61081395486111 has 128 divisors (see below), whose sum is σ = 121575769620480. Its totient is φ = 29271115670400.

The previous prime is 61081395486101. The next prime is 61081395486187. The reversal of 61081395486111 is 11168459318016.

61081395486111 is a `hidden beast` number, since 6 + 1 + 0 + 8 + 1 + 39 + 548 + 61 + 1 + 1 = 666.

It is not a de Polignac number, because 61081395486111 - 2¹⁵ = 61081395453343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61081395486101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 41740126 + ... + 43178708.

It is an arithmetic number, because the mean of its divisors is an integer number (949810700160).

Almost surely, 2^{61081395486111} is an apocalyptic number.

61081395486111 is a deficient number, since it is larger than the sum of its proper divisors (60494374134369).

61081395486111 is a wasteful number, since it uses less digits than its factorization.

61081395486111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440194 (or 1440188 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The spelling of 61081395486111 in words is "sixty-one trillion, eighty-one billion, three hundred ninety-five million, four hundred eighty-six thousand, one hundred eleven".