61709167368 has 48 divisors (see below), whose sum is σ = 167381966700. Its totient is φ = 20538587520.

The previous prime is 61709167343. The next prime is 61709167381. The reversal of 61709167368 is 86376190716.

It is a happy number.

61709167368 is a `hidden beast` number, since 617 + 0 + 9 + 16 + 7 + 3 + 6 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 61009988004 + 699179364 = 247002^2 + 26442^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 600723 + ... + 695906.

Almost surely, 2^61709167368 is an apocalyptic number.

It is an amenable number.

61709167368 is an abundant number, since it is smaller than the sum of its proper divisors (105672799332).

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

61709167368 is a wasteful number, since it uses less digits than its factorization.

61709167368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297302 (or 1297295 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 61709167368 in words is "sixty-one billion, seven hundred nine million, one hundred sixty-seven thousand, three hundred sixty-eight".