61265433735738 has 12 divisors (see below), whose sum is σ = 132741773094138. Its totient is φ = 20421811245240.

The previous prime is 61265433735719. The next prime is 61265433735739. The reversal of 61265433735738 is 83753733456216.

61265433735738 is a `hidden beast` number, since 6 + 1 + 2 + 6 + 54 + 3 + 3 + 7 + 3 + 573 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 55007246055969 + 6258187679769 = 7416687^2 + 2501637^2 .

It is not an unprimeable number, because it can be changed into a prime (61265433735739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1701817603753 + ... + 1701817603788.

Almost surely, 2^{61265433735738} is an apocalyptic number.

61265433735738 is an abundant number, since it is smaller than the sum of its proper divisors (71476339358400).

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

61265433735738 is a wasteful number, since it uses less digits than its factorization.

61265433735738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403635207549 (or 3403635207546 counting only the distinct ones).

The product of its digits is 228614400, while the sum is 63.

The spelling of 61265433735738 in words is "sixty-one trillion, two hundred sixty-five billion, four hundred thirty-three million, seven hundred thirty-five thousand, seven hundred thirty-eight".