61174520740 has 24 divisors (see below), whose sum is σ = 136023346872. Its totient is φ = 23030407680.

The previous prime is 61174520717. The next prime is 61174520789. The reversal of 61174520740 is 4702547116.

61174520740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 23643982756 + 37530537984 = 153766^2 + 193728^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61174520740.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89962191 + ... + 89962870.

It is an arithmetic number, because the mean of its divisors is an integer number (5667639453).

Almost surely, 2^61174520740 is an apocalyptic number.

It is an amenable number.

61174520740 is an abundant number, since it is smaller than the sum of its proper divisors (74848826132).

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

61174520740 is a wasteful number, since it uses less digits than its factorization.

61174520740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179925087 (or 179925085 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The spelling of 61174520740 in words is "sixty-one billion, one hundred seventy-four million, five hundred twenty thousand, seven hundred forty".