61160331180 has 384 divisors, whose sum is σ = 201083129856. Its totient is φ = 13753958400.

The previous prime is 61160331157. The next prime is 61160331187. The reversal of 61160331180 is 8113306116.

It is a super-2 number, since 2×61160331180² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (61160331187) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 67134925 + ... + 67135835.

It is an arithmetic number, because the mean of its divisors is an integer number (523653984).

Almost surely, 2^61160331180 is an apocalyptic number.

61160331180 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 61160331180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100541564928).

61160331180 is an abundant number, since it is smaller than the sum of its proper divisors (139922798676).

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

61160331180 is a wasteful number, since it uses less digits than its factorization.

61160331180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097 (or 1095 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

Adding to 61160331180 its reverse (8113306116), we get a palindrome (69273637296).

The spelling of 61160331180 in words is "sixty-one billion, one hundred sixty million, three hundred thirty-one thousand, one hundred eighty".