61057811616011 has 4 divisors (see below), whose sum is σ = 69780356132592. Its totient is φ = 52335267099432.

The previous prime is 61057811616001. The next prime is 61057811616017. The reversal of 61057811616011 is 11061611875016.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61057811616011 - 2¹⁴ = 61057811599627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61057811616017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4361272258280 + ... + 4361272258293.

It is an arithmetic number, because the mean of its divisors is an integer number (17445089033148).

Almost surely, 2^{61057811616011} is an apocalyptic number.

61057811616011 is a deficient number, since it is larger than the sum of its proper divisors (8722544516581).

61057811616011 is an equidigital number, since it uses as much as digits as its factorization.

61057811616011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8722544516580.

The product of its (nonzero) digits is 60480, while the sum is 44.

The spelling of 61057811616011 in words is "sixty-one trillion, fifty-seven billion, eight hundred eleven million, six hundred sixteen thousand, eleven".