61000660740255 has 8 divisors (see below), whose sum is σ = 97601057184432. Its totient is φ = 32533685728128.

The previous prime is 61000660740233. The next prime is 61000660740287. The reversal of 61000660740255 is 55204706600016.

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

It is not a de Polignac number, because 61000660740255 - 2⁹ = 61000660739743 is a prime.

It is a super-2 number, since 2×61000660740255² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2033355357994 + ... + 2033355358023.

It is an arithmetic number, because the mean of its divisors is an integer number (12200132148054).

Almost surely, 2^{61000660740255} is an apocalyptic number.

61000660740255 is a deficient number, since it is larger than the sum of its proper divisors (36600396444177).

61000660740255 is a wasteful number, since it uses less digits than its factorization.

61000660740255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066710716025.

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 61000660740255 in words is "sixty-one trillion, six hundred sixty million, seven hundred forty thousand, two hundred fifty-five".