61189160688 has 30 divisors (see below), whose sum is σ = 171244665384. Its totient is φ = 20396386848.

The previous prime is 61189160687. The next prime is 61189160699. The reversal of 61189160688 is 88606198116.

61189160688 is a `hidden beast` number, since 611 + 8 + 9 + 16 + 0 + 6 + 8 + 8 = 666.

It is a super-2 number, since 2×61189160688² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61189160687) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 212462220 + ... + 212462507.

Almost surely, 2^61189160688 is an apocalyptic number.

It is an amenable number.

61189160688 is an abundant number, since it is smaller than the sum of its proper divisors (110055504696).

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

61189160688 is a wasteful number, since it uses less digits than its factorization.

61189160688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424924741 (or 424924732 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 54.

The spelling of 61189160688 in words is "sixty-one billion, one hundred eighty-nine million, one hundred sixty thousand, six hundred eighty-eight".