61799271040 has 96 divisors (see below), whose sum is σ = 159977886300. Its totient is φ = 22818152448.

The previous prime is 61799271019. The next prime is 61799271041. The reversal of 61799271040 is 4017299716.

It can be written as a sum of positive squares in 6 ways, for example, as 84787264 + 61714483776 = 9208^2 + 248424^2 .

It is not an unprimeable number, because it can be changed into a prime (61799271041) 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 11 ways as a sum of consecutive naturals, for example, 177525 + ... + 393844.

Almost surely, 2^61799271040 is an apocalyptic number.

It is an amenable number.

61799271040 is an abundant number, since it is smaller than the sum of its proper divisors (98178615260).

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

61799271040 is a wasteful number, since it uses less digits than its factorization.

61799271040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571414 (or 571389 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 61799271040 in words is "sixty-one billion, seven hundred ninety-nine million, two hundred seventy-one thousand, forty".