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72813780741 = 31317109824707
BaseRepresentation
bin100001111010000001…
…0100001111100000101
320221221111222022102010
41003310002201330011
52143110311440431
653241124004433
75155251632022
oct1036402417405
9227844868363
1072813780741
11289755321a9
1212141230719
136b3538b280
14374a5c6549
151d6266d846
hex10f40a1f05

72813780741 has 16 divisors (see below), whose sum is σ = 110703305664. Its totient is φ = 42172687104.

The previous prime is 72813780727. The next prime is 72813780791. The reversal of 72813780741 is 14708731827.

It is not a de Polignac number, because 72813780741 - 25 = 72813780709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72813780791) 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, 54911691 + ... + 54913016.

It is an arithmetic number, because the mean of its divisors is an integer number (6918956604).

Almost surely, 272813780741 is an apocalyptic number.

It is an amenable number.

72813780741 is a deficient number, since it is larger than the sum of its proper divisors (37889524923).

72813780741 is a wasteful number, since it uses less digits than its factorization.

72813780741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109824740.

The product of its (nonzero) digits is 526848, while the sum is 48.

The spelling of 72813780741 in words is "seventy-two billion, eight hundred thirteen million, seven hundred eighty thousand, seven hundred forty-one".

Divisors: 1 3 13 17 39 51 221 663 109824707 329474121 1427721191 1867020019 4283163573 5601060057 24271260247 72813780741