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72715064993 is a prime number
BaseRepresentation
bin100001110111000100…
…1111101011010100001
320221200122020000212022
41003232021331122201
52142410024034433
653223240111225
75152642566014
oct1035611753241
9227618200768
1072715064993
112892483863a
1212114165515
136b1aaa719c
14373b44b37b
151d58b6e698
hex10ee27d6a1

72715064993 has 2 divisors, whose sum is σ = 72715064994. Its totient is φ = 72715064992.

The previous prime is 72715064987. The next prime is 72715065047. The reversal of 72715064993 is 39946051727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63089885329 + 9625179664 = 251177^2 + 98108^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-72715064993 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (72715064593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36357532496 + 36357532497.

It is an arithmetic number, because the mean of its divisors is an integer number (36357532497).

Almost surely, 272715064993 is an apocalyptic number.

It is an amenable number.

72715064993 is a deficient number, since it is larger than the sum of its proper divisors (1).

72715064993 is an equidigital number, since it uses as much as digits as its factorization.

72715064993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 53.

The spelling of 72715064993 in words is "seventy-two billion, seven hundred fifteen million, sixty-four thousand, nine hundred ninety-three".