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61437755132 = 22131727356003
BaseRepresentation
bin111001001101111110…
…011011111011111100
312212120200222100000022
4321031332123323330
52001311031131012
644120224151312
74303325205425
oct711576337374
9185520870008
1061437755132
1124068013846
12baa7468538
135a41597780
142d8b7d264c
1518e8aa4472
hexe4df9befc

61437755132 has 72 divisors (see below), whose sum is σ = 124685289456. Its totient is φ = 26321836032.

The previous prime is 61437755051. The next prime is 61437755161. The reversal of 61437755132 is 23155773416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1069043 + ... + 1125045.

Almost surely, 261437755132 is an apocalyptic number.

It is an amenable number.

61437755132 is an abundant number, since it is smaller than the sum of its proper divisors (63247534324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61437755132 is a wasteful number, since it uses less digits than its factorization.

61437755132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56127 (or 56108 counting only the distinct ones).

The product of its digits is 529200, while the sum is 44.

The spelling of 61437755132 in words is "sixty-one billion, four hundred thirty-seven million, seven hundred fifty-five thousand, one hundred thirty-two".

Divisors: 1 2 4 13 17 26 34 52 68 73 146 221 289 292 442 578 884 949 1156 1241 1898 2482 3757 3796 4964 7514 15028 16133 21097 32266 42194 56003 64532 84388 112006 224012 274261 548522 728039 952051 1097044 1456078 1904102 2912156 3808204 4088219 8176438 12376663 16184867 16352876 24753326 32369734 49506652 53146847 64739468 69499723 106293694 138999446 210403271 212587388 277998892 420806542 841613084 903496399 1181495291 1806992798 2362990582 3613985596 4725981164 15359438783 30718877566 61437755132