61061000552 has 8 divisors (see below), whose sum is σ = 114489376050. Its totient is φ = 30530500272.

The previous prime is 61061000543. The next prime is 61061000617. The reversal of 61061000552 is 25500016016.

It can be written as a sum of positive squares in only one way, i.e., 47422030756 + 13638969796 = 217766^2 + 116786^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×61061000552² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3816312527 + ... + 3816312542.

Almost surely, 2^61061000552 is an apocalyptic number.

It is an amenable number.

61061000552 is a deficient number, since it is larger than the sum of its proper divisors (53428375498).

61061000552 is a wasteful number, since it uses less digits than its factorization.

61061000552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7632625075 (or 7632625071 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 61061000552 its reverse (25500016016), we get a palindrome (86561016568).

The spelling of 61061000552 in words is "sixty-one billion, sixty-one million, five hundred fifty-two", and thus it is an aban number.