61135222260 has 96 divisors (see below), whose sum is σ = 195768760320. Its totient is φ = 13964047488.

The previous prime is 61135222259. The next prime is 61135222271. The reversal of 61135222260 is 6222253116.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 562897 + ... + 662663.

It is an arithmetic number, because the mean of its divisors is an integer number (2039257920).

Almost surely, 2^61135222260 is an apocalyptic number.

61135222260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61135222260 is an abundant number, since it is smaller than the sum of its proper divisors (134633538060).

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

61135222260 is a wasteful number, since it uses less digits than its factorization.

61135222260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101245 (or 101243 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 61135222260 its reverse (6222253116), we get a palindrome (67357475376).

The spelling of 61135222260 in words is "sixty-one billion, one hundred thirty-five million, two hundred twenty-two thousand, two hundred sixty".