61565360886 has 12 divisors (see below), whose sum is σ = 133391615292. Its totient is φ = 20521786956.

The previous prime is 61565360881. The next prime is 61565360893. The reversal of 61565360886 is 68806356516.

It is a super-2 number, since 2×61565360886² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61565360881) 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, 1710148896 + ... + 1710148931.

It is an arithmetic number, because the mean of its divisors is an integer number (11115967941).

Almost surely, 2^61565360886 is an apocalyptic number.

61565360886 is an abundant number, since it is smaller than the sum of its proper divisors (71826254406).

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

61565360886 is a wasteful number, since it uses less digits than its factorization.

61565360886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420297835 (or 3420297832 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 61565360886 in words is "sixty-one billion, five hundred sixty-five million, three hundred sixty thousand, eight hundred eighty-six".