61005545510541 has 16 divisors (see below), whose sum is σ = 81853552517184. Its totient is φ = 40414751129984.

The previous prime is 61005545510537. The next prime is 61005545510543. The reversal of 61005545510541 is 14501554550016.

It is a cyclic number.

It is not a de Polignac number, because 61005545510541 - 2² = 61005545510537 is a prime.

It is a super-2 number, since 2×61005545510541² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61005545510493 and 61005545510502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61005545510543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99699816 + ... + 100309841.

It is an arithmetic number, because the mean of its divisors is an integer number (5115847032324).

Almost surely, 2^{61005545510541} is an apocalyptic number.

It is an amenable number.

61005545510541 is a deficient number, since it is larger than the sum of its proper divisors (20848007006643).

61005545510541 is a wasteful number, since it uses less digits than its factorization.

61005545510541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200010300.

The product of its (nonzero) digits is 300000, while the sum is 42.

The spelling of 61005545510541 in words is "sixty-one trillion, five billion, five hundred forty-five million, five hundred ten thousand, five hundred forty-one".