61411212061 has 4 divisors (see below), whose sum is σ = 61411840092. Its totient is φ = 61410584032.

The previous prime is 61411212053. The next prime is 61411212157. The reversal of 61411212061 is 16021211416.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3902375961 + 57508836100 = 62469^2 + 239810^2 .

It is a cyclic number.

It is not a de Polignac number, because 61411212061 - 2³ = 61411212053 is a prime.

It is a super-2 number, since 2×61411212061² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61411212011) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 132280 + ... + 374593.

It is an arithmetic number, because the mean of its divisors is an integer number (15352960023).

Almost surely, 2^61411212061 is an apocalyptic number.

It is an amenable number.

61411212061 is a deficient number, since it is larger than the sum of its proper divisors (628031).

61411212061 is a wasteful number, since it uses less digits than its factorization.

61411212061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628030.

The product of its (nonzero) digits is 576, while the sum is 25.

Adding to 61411212061 its reverse (16021211416), we get a palindrome (77432423477).

The spelling of 61411212061 in words is "sixty-one billion, four hundred eleven million, two hundred twelve thousand, sixty-one".