61306750404 has 81 divisors (see below), whose sum is σ = 160610765133. Its totient is φ = 19717042464.

The previous prime is 61306750381. The next prime is 61306750411. The reversal of 61306750404 is 40405760316.

It is a happy number.

The square root of 61306750404 is 247602.

It is a perfect power (a square), and thus also a powerful number.

61306750404 is a `hidden beast` number, since 61 + 30 + 67 + 504 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 32147772804 + 29158977600 = 179298^2 + 170760^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 43082037 + ... + 43083459.

Almost surely, 2^61306750404 is an apocalyptic number.

61306750404 is the 247602-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61306750404

61306750404 is an abundant number, since it is smaller than the sum of its proper divisors (99304014729).

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

61306750404 is a wasteful number, since it uses less digits than its factorization.

61306750404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914 (or 1457 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

Multiplying 61306750404 by its sum of digits (36), we get a square (2207043014544 = 1485612²).

61306750404 divided by its sum of digits (36) gives a square (1702965289 = 41267²).

The spelling of 61306750404 in words is "sixty-one billion, three hundred six million, seven hundred fifty thousand, four hundred four".