61051551000500 has 24 divisors (see below), whose sum is σ = 133336587386184. Its totient is φ = 24420620400000.

The previous prime is 61051551000449. The next prime is 61051551000527. The reversal of 61051551000500 is 500015515016.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1005262906384 + 60046288094116 = 1002628^2 + 7748954^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61051550501 + ... + 61051551500.

It is an arithmetic number, because the mean of its divisors is an integer number (5555691141091).

Almost surely, 2^{61051551000500} is an apocalyptic number.

It is an amenable number.

61051551000500 is an abundant number, since it is smaller than the sum of its proper divisors (72285036385684).

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

61051551000500 is a wasteful number, since it uses less digits than its factorization.

61051551000500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122103102020 (or 122103102008 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 29.

Adding to 61051551000500 its reverse (500015515016), we get a palindrome (61551566515516).

The spelling of 61051551000500 in words is "sixty-one trillion, fifty-one billion, five hundred fifty-one million, five hundred", and thus it is an aban number.