61611100050 has 96 divisors (see below), whose sum is σ = 154821965760. Its totient is φ = 16212960000.

The previous prime is 61611100049. The next prime is 61611100051. The reversal of 61611100050 is 5000111616.

61611100050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61611100049) and next prime (61611100051).

It is a super-3 number, since 3×61611100050³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (61611100051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4096344 + ... + 4111356.

It is an arithmetic number, because the mean of its divisors is an integer number (1612728810).

Almost surely, 2^61611100050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61611100050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77410982880).

61611100050 is an abundant number, since it is smaller than the sum of its proper divisors (93210865710).

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

61611100050 is a wasteful number, since it uses less digits than its factorization.

61611100050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15388 (or 15383 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 61611100050 its reverse (5000111616), we get a palindrome (66611211666).

The spelling of 61611100050 in words is "sixty-one billion, six hundred eleven million, one hundred thousand, fifty".