61061405560500 has 192 divisors, whose sum is σ = 178536533011200. Its totient is φ = 16216687872000.

The previous prime is 61061405560423. The next prime is 61061405560583. The reversal of 61061405560500 is 506550416016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 473099976 + ... + 473229024.

It is an arithmetic number, because the mean of its divisors is an integer number (929877776100).

Almost surely, 2^{61061405560500} is an apocalyptic number.

61061405560500 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 61061405560500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89268266505600).

61061405560500 is an abundant number, since it is smaller than the sum of its proper divisors (117475127450700).

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

61061405560500 is a wasteful number, since it uses less digits than its factorization.

61061405560500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130355 (or 130343 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

Adding to 61061405560500 its reverse (506550416016), we get a palindrome (61567955976516).

The spelling of 61061405560500 in words is "sixty-one trillion, sixty-one billion, four hundred five million, five hundred sixty thousand, five hundred".