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61725152086 = 2135981396931
BaseRepresentation
bin111001011111000110…
…110001001101010110
312220022201202121111221
4321133012301031112
52002403114331321
644204532120554
74313415064423
oct713706611526
9186281677457
1061725152086
11241a526a394
12bb6776615a
135a88ca1c40
142db7a44d4a
151913e23e41
hexe5f1b1356

61725152086 has 16 divisors (see below), whose sum is σ = 99726783408. Its totient is φ = 28483696800.

The previous prime is 61725152053. The next prime is 61725152107. The reversal of 61725152086 is 68025152716.

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, 42960 + ... + 353971.

It is an arithmetic number, because the mean of its divisors is an integer number (6232923963).

Almost surely, 261725152086 is an apocalyptic number.

61725152086 is a deficient number, since it is larger than the sum of its proper divisors (38001631322).

61725152086 is a wasteful number, since it uses less digits than its factorization.

61725152086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402927.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 61725152086 in words is "sixty-one billion, seven hundred twenty-five million, one hundred fifty-two thousand, eighty-six".

Divisors: 1 2 13 26 5981 11962 77753 155506 396931 793862 5160103 10320206 2374044311 4748088622 30862576043 61725152086