61170056109 has 12 divisors (see below), whose sum is σ = 88536706752. Its totient is φ = 40696979400.

The previous prime is 61170056093. The next prime is 61170056113. The reversal of 61170056109 is 90165007116.

It is a happy number.

It is not a de Polignac number, because 61170056109 - 2⁴ = 61170056093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61170056309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6916837 + ... + 6925674.

It is an arithmetic number, because the mean of its divisors is an integer number (7378058896).

Almost surely, 2^61170056109 is an apocalyptic number.

It is an amenable number.

61170056109 is a deficient number, since it is larger than the sum of its proper divisors (27366650643).

61170056109 is a wasteful number, since it uses less digits than its factorization.

61170056109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13843008 (or 13843005 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The spelling of 61170056109 in words is "sixty-one billion, one hundred seventy million, fifty-six thousand, one hundred nine".