61165650660 has 24 divisors (see below), whose sum is σ = 171263822016. Its totient is φ = 16310840160.

The previous prime is 61165650583. The next prime is 61165650673. The reversal of 61165650660 is 6605656116.

61165650660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61165650660² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509713696 + ... + 509713815.

It is an arithmetic number, because the mean of its divisors is an integer number (7135992584).

Almost surely, 2^61165650660 is an apocalyptic number.

61165650660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61165650660 is an abundant number, since it is smaller than the sum of its proper divisors (110098171356).

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

61165650660 is a wasteful number, since it uses less digits than its factorization.

61165650660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019427523 (or 1019427521 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 61165650660 in words is "sixty-one billion, one hundred sixty-five million, six hundred fifty thousand, six hundred sixty".