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83250778079 = 7213912222989
BaseRepresentation
bin100110110001000100…
…0100000111111011111
321221212220000201012002
41031202020200333133
52330444144344304
6102124521032515
76005013636500
oct1154210407737
9257786021162
1083250778079
1132340991837
121417462573b
137b09771c41
14405a7c0ba7
152273a9c31e
hex1362220fdf

83250778079 has 12 divisors (see below), whose sum is σ = 97539460200. Its totient is φ = 70844438448.

The previous prime is 83250778069. The next prime is 83250778139. The reversal of 83250778079 is 97087705238.

It is not a de Polignac number, because 83250778079 - 24 = 83250778063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83250778069) 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 in 11 ways as a sum of consecutive naturals, for example, 6104684 + ... + 6118305.

It is an arithmetic number, because the mean of its divisors is an integer number (8128288350).

Almost surely, 283250778079 is an apocalyptic number.

83250778079 is a deficient number, since it is larger than the sum of its proper divisors (14288682121).

83250778079 is a wasteful number, since it uses less digits than its factorization.

83250778079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12223142 (or 12223135 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 56.

The spelling of 83250778079 in words is "eighty-three billion, two hundred fifty million, seven hundred seventy-eight thousand, seventy-nine".

Divisors: 1 7 49 139 973 6811 12222989 85560923 598926461 1698995471 11892968297 83250778079