61011050500 has 96 divisors (see below), whose sum is σ = 134201235168. Its totient is φ = 24230592000.

The previous prime is 61011050417. The next prime is 61011050501. The reversal of 61011050500 is 505011016.

It can be written as a sum of positive squares in 16 ways, for example, as 37933794756 + 23077255744 = 194766^2 + 151912^2 .

It is a super-2 number, since 2×61011050500² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61011050501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51659910 + ... + 51661090.

It is an arithmetic number, because the mean of its divisors is an integer number (1397929533).

Almost surely, 2^61011050500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61011050500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67100617584).

61011050500 is an abundant number, since it is smaller than the sum of its proper divisors (73190184668).

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

61011050500 is a wasteful number, since it uses less digits than its factorization.

61011050500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850 (or 1838 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 19.

Adding to 61011050500 its reverse (505011016), we get a palindrome (61516061516).

The spelling of 61011050500 in words is "sixty-one billion, eleven million, fifty thousand, five hundred".