61543513122 has 32 divisors (see below), whose sum is σ = 151491725952. Its totient is φ = 16231256064.

The previous prime is 61543513117. The next prime is 61543513123. The reversal of 61543513122 is 22131534516.

It is not an unprimeable number, because it can be changed into a prime (61543513123) 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, 56357983 + ... + 56359074.

It is an arithmetic number, because the mean of its divisors is an integer number (4734116436).

Almost surely, 2^61543513122 is an apocalyptic number.

61543513122 is an abundant number, since it is smaller than the sum of its proper divisors (89948212830).

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

61543513122 is a wasteful number, since it uses less digits than its factorization.

61543513122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112717082.

The product of its digits is 21600, while the sum is 33.

The spelling of 61543513122 in words is "sixty-one billion, five hundred forty-three million, five hundred thirteen thousand, one hundred twenty-two".