61006415505 has 64 divisors (see below), whose sum is σ = 113532887040. Its totient is φ = 27396382464.

The previous prime is 61006415501. The next prime is 61006415513. The reversal of 61006415505 is 50551460016.

It is not a de Polignac number, because 61006415505 - 2² = 61006415501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61006415501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2570031 + ... + 2593659.

It is an arithmetic number, because the mean of its divisors is an integer number (1773951360).

Almost surely, 2^61006415505 is an apocalyptic number.

It is an amenable number.

61006415505 is a deficient number, since it is larger than the sum of its proper divisors (52526471535).

61006415505 is a wasteful number, since it uses less digits than its factorization.

61006415505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24078.

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 61006415505 in words is "sixty-one billion, six million, four hundred fifteen thousand, five hundred five".