61707166240 has 24 divisors (see below), whose sum is σ = 145783180620. Its totient is φ = 24682866432.

The previous prime is 61707166237. The next prime is 61707166249. The reversal of 61707166240 is 4266170716.

It can be written as a sum of positive squares in 2 ways, for example, as 49378172944 + 12328993296 = 222212^2 + 111036^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 61707166193 and 61707166202.

It is not an unprimeable number, because it can be changed into a prime (61707166249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192834735 + ... + 192835054.

Almost surely, 2^61707166240 is an apocalyptic number.

It is an amenable number.

61707166240 is an abundant number, since it is smaller than the sum of its proper divisors (84076014380).

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

61707166240 is a wasteful number, since it uses less digits than its factorization.

61707166240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385669804 (or 385669796 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 61707166240 in words is "sixty-one billion, seven hundred seven million, one hundred sixty-six thousand, two hundred forty".