61166050560 has 144 divisors (see below), whose sum is σ = 217054649280. Its totient is φ = 16310937600.

The previous prime is 61166050549. The next prime is 61166050567. The reversal of 61166050560 is 6505066116.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×61166050560² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61166050567) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 850366 + ... + 919485.

Almost surely, 2^61166050560 is an apocalyptic number.

61166050560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61166050560 is an abundant number, since it is smaller than the sum of its proper divisors (155888598720).

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

61166050560 is a wasteful number, since it uses less digits than its factorization.

61166050560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769881 (or 1769861 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 61166050560 in words is "sixty-one billion, one hundred sixty-six million, fifty thousand, five hundred sixty".