61000001061 has 16 divisors (see below), whose sum is σ = 83096073984. Its totient is φ = 39785969664.

The previous prime is 61000001047. The next prime is 61000001141. The reversal of 61000001061 is 16010000016.

It is not a de Polignac number, because 61000001061 - 2¹⁰ = 61000000037 is a prime.

It is a super-2 number, since 2×61000001061² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61000001061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61000001021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286341 + ... + 451653.

It is an arithmetic number, because the mean of its divisors is an integer number (5193504624).

Almost surely, 2^61000001061 is an apocalyptic number.

It is an amenable number.

61000001061 is a deficient number, since it is larger than the sum of its proper divisors (22096072923).

61000001061 is a wasteful number, since it uses less digits than its factorization.

61000001061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167980.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 61000001061 its reverse (16010000016), we get a palindrome (77010001077).

The spelling of 61000001061 in words is "sixty-one billion, one thousand, sixty-one".