61000105550 has 24 divisors (see below), whose sum is σ = 113471966496. Its totient is φ = 24397511040.

The previous prime is 61000105421. The next prime is 61000105577. The reversal of 61000105550 is 5550100016.

It is a super-2 number, since 2×61000105550² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 467627 + ... + 583673.

It is an arithmetic number, because the mean of its divisors is an integer number (4727998604).

Almost surely, 2^61000105550 is an apocalyptic number.

61000105550 is a deficient number, since it is larger than the sum of its proper divisors (52471860946).

61000105550 is a wasteful number, since it uses less digits than its factorization.

61000105550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126572 (or 126567 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 61000105550 its reverse (5550100016), we get a palindrome (66550205566).

The spelling of 61000105550 in words is "sixty-one billion, one hundred five thousand, five hundred fifty".