61197308442 has 24 divisors (see below), whose sum is σ = 132604588116. Its totient is φ = 20397499776.

The previous prime is 61197308383. The next prime is 61197308461. The reversal of 61197308442 is 24480379116.

It can be written as a sum of positive squares in 2 ways, for example, as 58202045001 + 2995263441 = 241251^2 + 54729^2 .

It is a super-2 number, since 2×61197308442² (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 in 11 ways as a sum of consecutive naturals, for example, 114258 + ... + 368034.

Almost surely, 2^61197308442 is an apocalyptic number.

61197308442 is an abundant number, since it is smaller than the sum of its proper divisors (71407279674).

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

61197308442 is a wasteful number, since it uses less digits than its factorization.

61197308442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267182 (or 267179 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 61197308442 in words is "sixty-one billion, one hundred ninety-seven million, three hundred eight thousand, four hundred forty-two".