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80312363437 = 91188158467
BaseRepresentation
bin100101011001011111…
…1010110100110101101
321200022002212210002011
41022302333112212231
52303434431112222
6100521152401221
75542133553115
oct1126277264655
9250262783064
1080312363437
1131073265389
1213694546211
13775ba71157
143c5c44a045
152150b20c77
hex12b2fd69ad

80312363437 has 4 divisors (see below), whose sum is σ = 80400522816. Its totient is φ = 80224204060.

The previous prime is 80312363413. The next prime is 80312363449. The reversal of 80312363437 is 73436321308.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80312363437 - 215 = 80312330669 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80312363437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80312363497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44078323 + ... + 44080144.

It is an arithmetic number, because the mean of its divisors is an integer number (20100130704).

Almost surely, 280312363437 is an apocalyptic number.

It is an amenable number.

80312363437 is a deficient number, since it is larger than the sum of its proper divisors (88159379).

80312363437 is an equidigital number, since it uses as much as digits as its factorization.

80312363437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88159378.

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 80312363437 in words is "eighty billion, three hundred twelve million, three hundred sixty-three thousand, four hundred thirty-seven".

Divisors: 1 911 88158467 80312363437