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61995028852 = 22103244761493
BaseRepresentation
bin111001101111001100…
…010001000101110100
312221000112120202211201
4321233030101011310
52003431211410402
644251412342244
74323203023231
oct715714210564
9187015522751
1061995028852
1124323639839
1210022014984
135accb83933
143001816788
15192c982687
hexe6f311174

61995028852 has 24 divisors (see below), whose sum is σ = 109591163136. Its totient is φ = 30683524128.

The previous prime is 61995028829. The next prime is 61995028969. The reversal of 61995028852 is 25882059916.

61995028852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61995028793 and 61995028802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 977418 + ... + 1038910.

It is an arithmetic number, because the mean of its divisors is an integer number (4566298464).

Almost surely, 261995028852 is an apocalyptic number.

It is an amenable number.

61995028852 is a deficient number, since it is larger than the sum of its proper divisors (47596134284).

61995028852 is a wasteful number, since it uses less digits than its factorization.

61995028852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64047 (or 64045 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 55.

The spelling of 61995028852 in words is "sixty-one billion, nine hundred ninety-five million, twenty-eight thousand, eight hundred fifty-two".

Divisors: 1 2 4 103 206 412 2447 4894 9788 61493 122986 245972 252041 504082 1008164 6333779 12667558 25335116 150473371 300946742 601893484 15498757213 30997514426 61995028852