61170056100 has 54 divisors (see below), whose sum is σ = 191734145330. Its totient is φ = 16312014720.

The previous prime is 61170056093. The next prime is 61170056113. The reversal of 61170056100 is 165007116.

It can be written as a sum of positive squares in 3 ways, for example, as 6506680896 + 54663375204 = 80664^2 + 233802^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 33982465 + ... + 33984264.

Almost surely, 2^61170056100 is an apocalyptic number.

61170056100 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61170056100 is an abundant number, since it is smaller than the sum of its proper divisors (130564089230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61170056100 is a wasteful number, since it uses less digits than its factorization.

61170056100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67966749 (or 67966739 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The spelling of 61170056100 in words is "sixty-one billion, one hundred seventy million, fifty-six thousand, one hundred".