61534608277 has 16 divisors (see below), whose sum is σ = 63987721200. Its totient is φ = 59124764160.

The previous prime is 61534608269. The next prime is 61534608287. The reversal of 61534608277 is 77280643516.

It can be written as a sum of positive squares in 8 ways, for example, as 3977320356 + 57557287921 = 63066^2 + 239911^2 .

It is a cyclic number.

It is not a de Polignac number, because 61534608277 - 2³ = 61534608269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61534608277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61534608257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2718627 + ... + 2741167.

It is an arithmetic number, because the mean of its divisors is an integer number (3999232575).

Almost surely, 2^61534608277 is an apocalyptic number.

It is an amenable number.

61534608277 is a deficient number, since it is larger than the sum of its proper divisors (2453112923).

61534608277 is a wasteful number, since it uses less digits than its factorization.

61534608277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23496.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 61534608277 in words is "sixty-one billion, five hundred thirty-four million, six hundred eight thousand, two hundred seventy-seven".