61183416960 has 512 divisors, whose sum is σ = 229191552000. Its totient is φ = 15382794240.

The previous prime is 61183416893. The next prime is 61183416961. The reversal of 61183416960 is 6961438116.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (61183416961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 108673639 + ... + 108674201.

It is an arithmetic number, because the mean of its divisors is an integer number (447639750).

Almost surely, 2^61183416960 is an apocalyptic number.

61183416960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61183416960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114595776000).

61183416960 is an abundant number, since it is smaller than the sum of its proper divisors (168008135040).

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

61183416960 is a wasteful number, since it uses less digits than its factorization.

61183416960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 923 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 61183416960 in words is "sixty-one billion, one hundred eighty-three million, four hundred sixteen thousand, nine hundred sixty".