61306552265 has 32 divisors (see below), whose sum is σ = 86385325824. Its totient is φ = 40885827840.

The previous prime is 61306552261. The next prime is 61306552271. The reversal of 61306552265 is 56225560316.

It is not a de Polignac number, because 61306552265 - 2² = 61306552261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61306552261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3696722 + ... + 3713268.

It is an arithmetic number, because the mean of its divisors is an integer number (2699541432).

Almost surely, 2^61306552265 is an apocalyptic number.

It is an amenable number.

61306552265 is a deficient number, since it is larger than the sum of its proper divisors (25078773559).

61306552265 is a wasteful number, since it uses less digits than its factorization.

61306552265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19457.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 61306552265 in words is "sixty-one billion, three hundred six million, five hundred fifty-two thousand, two hundred sixty-five".