61144456432011 has 8 divisors (see below), whose sum is σ = 81525979392000. Its totient is φ = 40762952213352.

The previous prime is 61144456432009. The next prime is 61144456432021. The reversal of 61144456432011 is 11023465444116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61144456432011 - 2¹ = 61144456432009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61144456432021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7326666 + ... + 13265328.

It is an arithmetic number, because the mean of its divisors is an integer number (10190747424000).

Almost surely, 2^{61144456432011} is an apocalyptic number.

61144456432011 is a deficient number, since it is larger than the sum of its proper divisors (20381522959989).

61144456432011 is a wasteful number, since it uses less digits than its factorization.

61144456432011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9370665.

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 61144456432011 in words is "sixty-one trillion, one hundred forty-four billion, four hundred fifty-six million, four hundred thirty-two thousand, eleven".