61726534664255 has 8 divisors (see below), whose sum is σ = 74071964701824. Its totient is φ = 49381145661600.

The previous prime is 61726534664243. The next prime is 61726534664317. The reversal of 61726534664255 is 55246643562716.

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

It is not a de Polignac number, because 61726534664255 - 2¹⁰ = 61726534663231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6846191 + ... + 13050800.

It is an arithmetic number, because the mean of its divisors is an integer number (9258995587728).

Almost surely, 2^{61726534664255} is an apocalyptic number.

61726534664255 is a deficient number, since it is larger than the sum of its proper divisors (12345430037569).

61726534664255 is a wasteful number, since it uses less digits than its factorization.

61726534664255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20517457.

The product of its digits is 217728000, while the sum is 62.

The spelling of 61726534664255 in words is "sixty-one trillion, seven hundred twenty-six billion, five hundred thirty-four million, six hundred sixty-four thousand, two hundred fifty-five".