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61795284239 = 1319733427169
BaseRepresentation
bin111001100011010010…
…010011010100001111
312220111121201200202002
4321203102103110033
52003024043043424
644215515222515
74315226151353
oct714322232417
9186447650662
1061795284239
1124230910747
12bb87147a3b
135a9a688960
142dc309d463
15191a178cae
hexe6349350f

61795284239 has 16 divisors (see below), whose sum is σ = 71010962400. Its totient is φ = 53299316736.

The previous prime is 61795284203. The next prime is 61795284281. The reversal of 61795284239 is 93248259716.

61795284239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-61795284239 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61795289239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1695554 + ... + 1731615.

It is an arithmetic number, because the mean of its divisors is an integer number (4438185150).

Almost surely, 261795284239 is an apocalyptic number.

61795284239 is a deficient number, since it is larger than the sum of its proper divisors (9215678161).

61795284239 is a wasteful number, since it uses less digits than its factorization.

61795284239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3427274.

The product of its digits is 6531840, while the sum is 56.

The spelling of 61795284239 in words is "sixty-one billion, seven hundred ninety-five million, two hundred eighty-four thousand, two hundred thirty-nine".

Divisors: 1 13 19 73 247 949 1387 18031 3427169 44553197 65116211 250183337 846510743 3252383381 4753483403 61795284239