61239249160 has 16 divisors (see below), whose sum is σ = 137788310700. Its totient is φ = 24495699648.

The previous prime is 61239249083. The next prime is 61239249161. The reversal of 61239249160 is 6194293216.

It can be written as a sum of positive squares in 2 ways, for example, as 55676177764 + 5563071396 = 235958^2 + 74586^2 .

It is not an unprimeable number, because it can be changed into a prime (61239249161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765490575 + ... + 765490654.

Almost surely, 2^61239249160 is an apocalyptic number.

It is an amenable number.

61239249160 is an abundant number, since it is smaller than the sum of its proper divisors (76549061540).

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

61239249160 is a wasteful number, since it uses less digits than its factorization.

61239249160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530981240 (or 1530981236 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 61239249160 in words is "sixty-one billion, two hundred thirty-nine million, two hundred forty-nine thousand, one hundred sixty".