61242055560 has 192 divisors, whose sum is σ = 235895587200. Its totient is φ = 13998168576.

The previous prime is 61242055529. The next prime is 61242055583. The reversal of 61242055560 is 6555024216.

61242055560 is a `hidden beast` number, since 6 + 1 + 2 + 42 + 0 + 55 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 382005 + ... + 518084.

It is an arithmetic number, because the mean of its divisors is an integer number (1228622850).

Almost surely, 2^61242055560 is an apocalyptic number.

61242055560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61242055560 is an abundant number, since it is smaller than the sum of its proper divisors (174653531640).

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

61242055560 is a wasteful number, since it uses less digits than its factorization.

61242055560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900122 (or 900106 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 61242055560 its reverse (6555024216), we get a palindrome (67797079776).

The spelling of 61242055560 in words is "sixty-one billion, two hundred forty-two million, fifty-five thousand, five hundred sixty".