61265433735565 has 8 divisors (see below), whose sum is σ = 74276443374840. Its totient is φ = 48507065060352.

The previous prime is 61265433735547. The next prime is 61265433735599. The reversal of 61265433735565 is 56553733456216.

It can be written as a sum of positive squares in 4 ways, for example, as 23231349251881 + 38034084483684 = 4819891^2 + 6167178^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61265433735565 - 2⁵ = 61265433735533 is a prime.

It is a congruent number.

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, 63160240480 + ... + 63160241449.

It is an arithmetic number, because the mean of its divisors is an integer number (9284555421855).

Almost surely, 2^{61265433735565} is an apocalyptic number.

It is an amenable number.

61265433735565 is a deficient number, since it is larger than the sum of its proper divisors (13011009639275).

61265433735565 is a wasteful number, since it uses less digits than its factorization.

61265433735565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126320482031.

The product of its digits is 204120000, while the sum is 61.

The spelling of 61265433735565 in words is "sixty-one trillion, two hundred sixty-five billion, four hundred thirty-three million, seven hundred thirty-five thousand, five hundred sixty-five".